What are microfilaments?
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Small fibrils formed from protein subunits.
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What are microfilaments?
Small fibrils formed from protein subunits.
What is the function of microfilaments in a cell?
They structurally support the cytoplasm and determine cell shape.
What types of molecules do cells synthesize?
Proteins, nucleic acids, and lipids.
Who is the author of Chapter 2 MC1?
Mariella P. Trance.
What does Chapter 2 MC1 discuss?
Cell structures and their functions.
What are organelles?
Specialized structures within a cell that perform specific functions.
How are lysosomes formed?
By the Golgi apparatus.
What do mitochondria break down to produce ATP?
Food molecules.
Where are microvilli abundant?
On the surface cells that line the intestine, kidney, and other areas important for absorption.
How do prokaryotic cells reproduce?
Primarily through binary fission.
What separates the contents of the nucleus from the cytoplasm?
The nuclear envelope.
What is the primary focus of the study in Anatomy and Physiology?
Understanding whole-cell activity.
What is the characteristic of plasma membranes?
They are selectively permeable.
Which organelle is responsible for processing proteins and lipids from the ER?
The Golgi Apparatus.
What cellular structures are formed by microtubules?
Cilia and flagella.
What is a cell?
The basic living unit of all organisms and the smallest units of life.
What is the function of intermediate filaments in a cell?
They provide mechanical support to the cell.
What is the function of lysosomes?
They contain enzymes that digest material taken into the cell.
What effect does communication between nerve cells and muscle cells have?
It causes muscle cells to contract.
What is a unique feature of nerve cells?
They transmit electrical signals throughout the body.
Do prokaryotic cells have a cell wall?
Yes, most prokaryotic cells have a rigid cell wall.
What is the function of the extracellular matrix?
It acts as glue to hold cells together in tissues.
What type of transport does exocytosis represent?
Active membrane transport.
What type of intravenous solution is most commonly given to quickly increase blood volume?
Isotonic solutions.
What is interstitial fluid?
The fluid in which cells are submersed (bathed).
What is the purpose of administering hypertonic solutions?
To pull water back into the blood for edematous (swollen) clients.
In which direction do molecules move during diffusion?
From high concentration to low concentration.
What is the diploid number of chromosomes for humans?
What causes cell differentiation?
The selective activation and inactivation of DNA sections.
What type of substances undergo simple diffusion through the cell membrane?
Non-polar, lipid-soluble (hydrophobic) substances.
What are reproductive cells referred to in terms of chromosome number?
They have the haploid number of chromosomes.
What type of cells does mitosis produce?
Two identical diploid cells.
What occurs during the S phase of interphase?
The cell synthesizes a complete copy of the DNA in its nucleus.
How does the haploid number of chromosomes relate to the diploid number?
It is half the diploid number of chromosomes.
What is each chromosome composed of?
Two genetically identical strands of chromatin.
Why is whole-cell activity important?
It ensures that all cellular processes work together to maintain homeostasis and support life.
What is hydrostatic pressure?
The pressure of water inside the cell pushing on the membrane.
What drives the process of facilitated diffusion?
The concentration gradient of the molecules.
What is the primary focus of the course taught by Mariella P. Trance MC1?
Anatomy and Physiology.
What is the focus of Chapter 2 MC1?
Anatomy and Physiology.
What is the first principle of Cell Theory?
All living things are made up of cells.
What are cells considered in living organisms?
The smallest working units of all living things.
How do all cells originate according to Cell Theory?
All cells come from preexisting cells through cell division.
What is a specific type of intermediate filament?
Keratin.
Where are cilia particularly numerous?
On surface cells that line the respiratory tract.
What are the main functions of the cytoskeleton?
Supports the cell, holds organelles in place, and enables the cell to change shape.
What is the function of nucleoli within the nucleus?
Site of RNA synthesis and ribosomal subunit assembly.
What type of material do lysosomes digest?
Material taken into the cell.
What is the glycocalyx?
A carbohydrate-rich layer on the surface of some cells.
What role does the plasma membrane play in a cell?
It acts as an active barrier separating intracellular fluid (ICF) from extracellular fluid (ECF).
How can the glycocalyx of cancer cells affect the immune system?
It can change so rapidly that the immune system cannot recognize the cell as damaged.
Who is associated with the study of whole-cell activity in Anatomy and Physiology?
Mariella P. Trance MC1.
What do the inner and outer membranes of the nucleus form?
Nuclear pores.
What is the Glycocalyx?
A structure consisting of sugars (carbohydrates) sticking out of the cell surface.
What is facilitated diffusion?
A type of passive membrane transport where binding is limited by the number of carriers present.
What organelles are found in plant cells?
Chloroplasts and vacuoles.
What is the function of the nucleus in a cell?
It acts as the control center, housing the cell's DNA.
What are some examples of whole-cell activities?
Metabolism, growth, reproduction, and response to stimuli.
How many flagella are typically found per cell?
Only one.
What is required for Active Membrane Transport?
Energy in the form of ATP.
What are cell parts and organelles?
Structures within a cell that perform specific functions.
What is the outermost component of a cell?
The cell membrane (or plasma membrane).
What is osmosis?
The diffusion of water across a selectively permeable membrane.
What is a hypertonic solution?
A solution with higher osmolarity than inside the cell, causing water to flow out and resulting in cell shrinking, known as crenation.
What limits the movement in facilitated diffusion?
The number of available carriers.
What is the function of the nucleus?
It acts as the control center of the cell, housing DNA.
Is facilitated diffusion an active or passive transport mechanism?
It is a passive transport mechanism.
What is one of the primary functions of cells?
Reproduction and inheritance.
What genetic information do cells contain?
A copy of the genetic information of the individual.
What is the function of a plant stem?
To support the plant and transport nutrients and water.
What type of organisms are primarily made up of prokaryotic cells?
Bacteria and Archaea.
What are cellular secretions?
Substances produced and released by cells, such as saliva and mucus.
What is the primary focus of the study in Anatomy and Physiology?
Understanding whole-cell activity.
What role do cells play in reproduction?
Cells are responsible for reproduction through processes like mitosis and meiosis.
What are eukaryotic cells?
Cells that have a nucleus and membrane-bound organelles.
What does the Golgi complex do with proteins and lipids?
It collects, modifies, packages, and distributes them.
What does active transport require from the cell?
The cell to expend energy.
How does the plasma membrane contribute to cellular activity?
By controlling what enters and leaves the cell.
What is blood plasma?
The fluid component of blood.
Why should hypotonic solutions not be given?
They can result in dangerous lysing of red and white blood cells.
What is mitosis?
Somatic cell division that produces two identical cells with the same number of chromosomes as the original cell.
Is diffusion an active or passive transport mechanism?
Passive transport mechanism.
Does Passive Membrane Transport require energy?
No, it does not require energy.
What role does the Glycocalyx play in cell recognition?
It functions as specific biological markers for cell-to-cell recognition.
What is whole-cell activity?
The collective functions and processes that occur within a cell as a unit.
What distinguishes prokaryotic cells?
They do not have a true nucleus.
What happens in an isotonic solution?
It has the same osmolarity as inside the cell, so the volume remains unchanged.
What is a key characteristic of passive membrane transport?
It does not require energy to move substances across the cell membrane.
What are cell parts and organelles?
Structures within a cell that perform specific functions.
What are cell parts and organelles?
Structures within a cell that perform specific functions.
What is the function of ribosomes?
They are responsible for protein synthesis.
Which type of cell is mentioned as having a flagellum?
Sperm cells.
What distinguishes Rough Endoplasmic Reticulum (ER) from Smooth ER?
Rough ER has ribosomes attached and is the site of protein synthesis.
What is the purpose of the endoplasmic reticulum?
It assists in the synthesis and transport of proteins and lipids.
How do cells communicate during whole-cell activity?
Through signaling molecules and pathways that coordinate responses.
Which gas, besides oxygen, is mentioned as diffusing through the cell membrane?
Carbon dioxide.
What is the function of ribosomes?
They are responsible for protein synthesis.
What are peroxisomes?
Organelles containing enzymes that break down fatty acids, amino acids, and hydrogen peroxide.
What is a vesicle?
A small, membrane-bound sac that transports or stores materials within cells.
What is the primary function of mitochondria?
Site of aerobic respiration and ATP synthesis.
What is the main function of red blood cells?
To transport oxygen throughout the body.
What are microvilli?
Extensions on cells that increase their surface area.
What are extracellular materials?
Substances found outside the cells.
What is necrosis?
Disorganized pathological cell death.
What is active transport?
A process that moves substances from a lower to a higher concentration and requires ATP.
What carbohydrate is associated with lysosomal dysfunction in Pompe disease?
Glycogen.
What are the two main components of a solution?
Solute and solvent.
What happens when the plasma membrane is severely damaged?
Substances diffuse freely into and out of the cell, compromising concentration gradients.
What are the two ways substances pass through plasma membranes?
Passive Membrane Transport and Active Membrane Transport.
What are the two genetically identical strands of a chromosome called?
Chromatids.
What occurs when solutions of different osmolarity are separated by a membrane that is permeable only to water?
Osmosis will occur until equilibrium is reached.
What is cerebrospinal fluid?
The fluid surrounding the nervous system organs.
What is tonicity?
The ability of a solution to change the shape or tone of cells by altering the cell’s internal water volume.
What is mitosis?
The process where a cell divides its copied DNA and cytoplasm to make two new cells.
Who is associated with the study of whole-cell activity in Anatomy and Physiology?
Mariella P. Trance MC1.
What role do mitochondria play in a cell?
They are the powerhouse of the cell, generating energy through respiration.
What is phagocytosis?
The movement of solid material into cells.
How does whole-cell activity relate to cell function?
It encompasses all cellular processes that contribute to the cell's survival and function.
What is the function of the nucleus in a cell?
It acts as the control center, housing the cell's DNA.
What are some examples of whole-cell activities?
Metabolism, signal transduction, and cell division.
In which direction does facilitated diffusion move substances?
From a higher concentration to a lower concentration.
How many pairs of chromosomes are formed from the 46 chromosomes?
23 pairs.
What is passive transport?
The movement of substances across the cell membrane without the use of energy.
What is the purpose of the endoplasmic reticulum?
It aids in the synthesis and transport of proteins and lipids.
In which type of cells does the Smooth ER store calcium ions?
In skeletal muscle cells.
What role do mitochondria play in a cell?
They are the powerhouse of the cell, producing energy through respiration.
What are some examples of whole-cell activities?
Metabolism, growth, reproduction, and response to stimuli.
What factors can influence whole-cell activity?
Environmental conditions, nutrient availability, and cellular signaling.
What role do proteins play in the cell membrane?
They assist in the transport of substances across the membrane.
What is the cytoplasm?
The living material surrounding the nucleus that contains many types of organelles.
What is the primary function of ribosomes?
Site of protein synthesis.
What is the primary characteristic of Amoeba Proteus?
It is a single-celled organism that can change shape.
What substances do peroxisomes help to break down?
Fatty acids, amino acids, and hydrogen peroxide.
What is a key characteristic of prokaryotic cells?
They are generally smaller and simpler than eukaryotic cells.
What process occurs in mitochondria that requires oxygen?
Aerobic respiration.
What is one primary function of the cell?
To provide structure and support to the organism.
How do cells contribute to metabolism?
Cells carry out metabolic processes to convert nutrients into energy.
What is the composition of the cytoskeleton?
Consists of protein structures.
Who is associated with the study of whole-cell activity in this context?
Mariella P. Trance MC1.
What is another example of a cellular secretion?
Mucus.
How do microtubules assist in cell division?
By providing structural support during the process.
What is cell differentiation?
The process by which cells develop specialized structures and functions.
What happens to mutated cells with rapidly changing glycocalyx?
They are not destroyed by the immune system and can replicate.
What is the primary focus of the study in Anatomy and Physiology?
Understanding whole-cell activity.
What is the primary function of flagella?
To propel the sperm cell.
What are some examples of eukaryotic organisms?
Plants, animals, fungi, and protists.
Who is associated with the study of whole-cell activity in Anatomy and Physiology?
Mariella P. Trance MC1.
What is the role of the plasma membrane in a cell?
It regulates the movement of substances in and out of the cell.
What is the result of reaching equilibrium in solutions of different osmolarity?
The same solutes and water molecules on both sides, with equal volume on both sides.
What is the function of the nucleus in eukaryotic cells?
To store genetic material and control cellular activities.
How does water concentration relate to solute particles?
Water concentration varies with the number of solute particles because solute particles displace water molecules.
What is formed as a result of mitosis?
Two daughter cells from a single parent cell.
Which vitamins are mentioned as being able to diffuse through the cell membrane?
Fat-soluble vitamins.
What are the two main types of transport mechanisms through the cell membrane?
Passive transport and active transport.
Do all cell types have the same Glycocalyx pattern?
No, every cell type has different patterns of this 'sugar coating'.
How many phases are there in interphase?
Three phases.
What does 'whole-cell activity' refer to?
The integrated functions and processes occurring within a cell.
What is the function of the nucleus in a cell?
It acts as the control center, housing the cell's DNA.
Why is apoptosis considered healthy for the host?
Because it is predictable and regulated.
What type of cells can have a cell wall but lack differentiated tissues?
Protist cells.
What are the two main types of transport mechanisms across the cell membrane?
Passive transport and active transport.
What do lysosomes do?
They contain enzymes that break down waste materials and cellular debris.
What type of cell has a chitin cell wall and is heterotrophic?
Fungal cells.
What is the primary focus of the course taught by Mariella P. Trance?
Anatomy and Physiology.
What is one of the primary functions of cells?
Synthesis of molecules.
What is cell metabolism?
The chemical reactions that occur within cells.
What is the primary purpose of energy released during cell metabolism?
It is used for cell activities.
How do cells communicate with one another?
By producing and receiving chemical and electrical signals.
What is an example of cell communication?
Nerve cells communicating with one another and with muscle cells.
With which type of cells is keratin associated?
Skin cells.
What encloses the cytoplasm?
The cell membrane, or plasma membrane.
What disease is caused by the inability of lysosomes to break down glycogen?
Pompe disease.
What distinguishes bacteria from other cells?
Bacteria are prokaryotic cells without a nucleus.
What is the primary function of the Golgi Apparatus?
To collect, modify, package, and distribute proteins and lipids manufactured by the ER.
What are extracellular fluids?
Body fluids that surround cells.
How do cells communicate with each other?
Cells communicate through signaling molecules and receptors.
What are nuclear pores?
Passageways through which materials can move into or out of the nucleus.
What happens when solutions of different osmolarity are separated by a membrane permeable to all molecules?
Both solutes and water cross the membrane until equilibrium is reached.
What is apoptosis?
The programmed death of cells.
What is the form of DNA during interphase?
DNA is dispersed as thin threads called chromatin.
What is osmolarity?
The same concentration of solutes and water molecules on both sides, with unequal volumes.
What is whole-cell activity?
The collective functions and processes that occur within a cell as a single unit.
What links the two chromatids in a chromosome?
A specialized region called the centromere.
What is the function of the cell membrane?
It is selectively permeable, allowing some substances to pass in or out of the cell.
What is apoptosis?
A naturally occurring process that is regulated and timely.
What are cell parts and organelles?
They are specialized structures within a cell that perform specific functions.
How do cells communicate during whole-cell activity?
Through signaling molecules and receptors.
Does facilitated diffusion require energy?
No, it does not require energy in the form of ATP.
How many chromosomes are organized in human cells?
46 chromosomes.
What type of cells does meiosis produce?
Haploid cells.
What are the two phases of the cell cycle?
Interphase and Cell division.
What type of cell has a rigid cell wall and may have flagella?
Prokaryotic cells.
What is the primary function of the cell membrane?
To regulate the movement of substances in and out of the cell.
What is the primary function of the cell membrane?
To regulate the movement of substances in and out of the cell.
What is the function of the nucleus in a cell?
It acts as the control center, housing the cell's DNA.
Why is it important to study whole-cell activity in anatomy and physiology?
It helps in understanding how cells contribute to the overall function of tissues and organs.
What is active transport?
The movement of substances against their concentration gradient, requiring energy.
What is the function of ribosomes?
They synthesize proteins.
Give an example of a process involved in cell metabolism.
Breaking down glucose.
What is the function of secretory vesicles?
To transport or store materials within cells.
What is cytoplasm?
The living material surrounding the nucleus of a cell.
What does the nucleus contain?
The genetic material of the cell (DNA) and nucleoli.
What is exocytosis?
The secretion of materials from cells by vesicle formation.
What is ATP?
Adenosine triphosphate, the energy currency of the cell.
What is the function of microtubules in a cell?
They support the cytoplasm, assist in cell division, and form components of cilia and flagella.
What is the primary function of microvilli?
To enhance absorption by increasing surface area.
What drives the process of diffusion?
The concentration gradient.
What is the function of cell membranes?
Cell membranes regulate the movement of substances in and out of the cell.
What type of cell has a cellulose cell wall?
Plant cells.
What is a solute?
A substance dissolved in a predominant liquid or gas, called the solvent.
What is endocytosis?
The movement of materials into cells by the formation of a vesicle.
What is whole-cell activity?
The collective functions and processes carried out by a cell as a single unit.
What is facilitated diffusion?
A type of passive transport where certain hydrophobic molecules are transported down their concentration gradient by carrier or channel proteins.
What is the function of the nucleus in a cell?
It acts as the control center, housing genetic material.
What type of proteins are involved in facilitated diffusion?
Channel or carrier proteins.
What are some examples of whole-cell activities?
Metabolism, signaling, and response to environmental changes.
What is the primary function of the cell membrane?
To regulate the movement of substances in and out of the cell.
What role do mitochondria play in a cell?
They are the powerhouse of the cell, generating energy.
How does necrosis differ from apoptosis?
Necrosis is a pathological process caused by toxins, infections, or traumas, and is often unregulated.
What is the function of the Smooth Endoplasmic Reticulum (ER)?
Site of lipid synthesis and stores calcium ions in skeletal muscle cells.
What happens to water concentration when solute concentration increases?
Water concentration goes down.
How does pinocytosis differ from phagocytosis?
Pinocytosis involves the ingestion of much smaller materials that contain liquid, rather than solid.
What is osmotic pressure?
The tendency of water to move into the cell by osmosis; the force required to prevent water movement across a selectively permeable membrane.
What happens during Prophase in mitosis?
Each chromosome consists of two chromatids joined at the centromere.
What occurs in a hypotonic solution?
It has lower osmolarity than inside the cell, leading to water flowing into the cell, which can cause swelling and potentially bursting, referred to as lysing.
What is the primary function of the cell membrane?
To regulate the movement of substances in and out of the cell.
What is the primary function of the cell membrane?
To regulate the movement of substances in and out of the cell.
What is the primary function of the cell membrane?
To regulate the movement of substances in and out of the cell.
What is the primary function of the cell membrane?
To regulate the movement of substances in and out of the cell.
What are the two main types of transport mechanisms across the cell membrane?
Passive transport and active transport.
What is passive transport?
The movement of substances across the cell membrane without the use of energy.
What are cell parts and organelles?
Structures within a cell that perform specific functions.
What is a clinical alert related to burn clients?
They lose precious fluids, proteins, and ions that weep from damaged cells.
What role does apoptosis play in the body?
It regulates the number of cells within various tissues.
What is osmolarity?
A measure of total concentration of solute particles.
What is receptor-mediated endocytosis?
A process where cell receptors attach to molecules, which are then transported into the cell.
What causes pressure in a cell?
The movement of water.
What factors influence the speed of diffusion?
Size of molecule and temperature.
What is meiosis?
Reproductive cell division that produces cells with half the number of chromosomes.
How do flagella compare in length to cilia?
Flagella are much longer than cilia.
What characterizes eukaryotic cells?
They have a true nucleus.
What is the function of ribosomes?
They are responsible for protein synthesis.
What does the cell membrane enclose?
The cytoplasm.
What are cell parts and organelles?
Structures within a cell that perform specific functions.
What is whole-cell activity?
The integrated function of all cellular processes and interactions within a cell.
How does water move in relation to solute concentration?
Water moves by osmosis from areas of low solute (high water) concentration to areas of high solute (low water) concentration.
What occurs during Interphase?
It is a nondividing phase.
Why can some water molecules sneak past non-polar phospholipid tails?
Because water is small enough to pass through.
What do lysosomes do?
They contain enzymes that break down waste materials and cellular debris.
What is the purpose of Cell division?
Formation of daughter cells from a single parent cell.
What is the key event in Anaphase?
Chromatids separate at the centromere and migrate to opposite poles.
What is the function of ribosomes?
They are responsible for protein synthesis.
What is active transport?
The movement of substances against their concentration gradient, requiring energy.
What is active transport?
The movement of substances against their concentration gradient, requiring energy.
What is active transport?
The movement of substances against their concentration gradient, requiring energy.
What is active transport?
The movement of substances against their concentration gradient, requiring energy.
What do lysosomes do?
They contain enzymes that digest waste materials and cellular debris.
What is osmosis?
The diffusion of water across a selectively permeable membrane.
What is the significance of the fluid mosaic model?
It describes the structure of the cell membrane as a flexible layer made of lipid molecules with embedded proteins.
What is the significance of the fluid mosaic model?
It describes the structure of the cell membrane as a flexible layer made of lipid molecules with embedded proteins.
What is active transport?
The movement of substances against their concentration gradient, requiring energy.
What is the primary function of mitochondria?
They produce energy (ATP) through cellular respiration.
What is the role of the nucleus?
It houses the cell's genetic material and controls cellular activities.
What is cytoplasm?
It is the jelly-like substance that fills the cell and contains organelles.
What role does energy play in whole-cell activity?
Energy is required for metabolic processes and cellular functions.
Why is understanding whole-cell activity important?
It helps in understanding how cells interact with their environment and maintain homeostasis.
How does water move through the cell membrane during osmosis?
Through a lipid bilayer and specific water channels called aquaporins (AQPs).
What is the primary function of the cell membrane?
To regulate the movement of substances in and out of the cell.
What is the significance of whole-cell activity in multicellular organisms?
It allows for coordination and specialization of functions among different cell types.
What role do mitochondria play in a cell?
They are the powerhouse of the cell, generating energy.
Why is whole-cell activity important?
It ensures that all cellular functions work together to maintain homeostasis and respond to environmental changes.
What role do organelles play in whole-cell activity?
Organelles perform specific functions that contribute to the overall activity of the cell.
What is the primary function of the cell membrane?
To regulate the movement of substances in and out of the cell.
What is the role of the endoplasmic reticulum?
It is involved in the synthesis of proteins and lipids.
What are the two main types of transport mechanisms across the cell membrane?
Passive transport and active transport.
What is passive transport?
The movement of substances across the cell membrane without the use of energy.
What is diffusion in the context of passive membrane transport?
The movement of a solute from an area of higher concentration to an area of lower concentration within a solvent.
What role does energy play in whole-cell activity?
Energy is required for metabolic processes and cellular functions.
What is active transport?
The movement of substances against their concentration gradient, requiring energy.
What role do transport proteins play in the cell membrane?
They facilitate the movement of substances across the membrane.
What role do transport proteins play in the cell membrane?
They facilitate the movement of substances that cannot directly cross the membrane.
What is the significance of the fluid mosaic model?
It describes the structure of the cell membrane as a flexible layer of lipid molecules with embedded proteins.
What role do transport proteins play in the cell membrane?
They facilitate the movement of substances that cannot directly cross the membrane.
What is facilitated diffusion?
A type of passive transport that uses transport proteins to move molecules across the membrane.
What is the role of lysosomes?
They digest and break down waste materials and cellular debris.
What are microvilli?
They increase the surface area of the cell for absorption.
What is osmosis?
The flow of water (or other solvent) when concentration is different on two sides of a membrane.
How does the chromosome number change during meiosis?
It is reduced in half.
What boundary does the cell membrane form?
The boundary between material inside the cell and material outside it.
What are the sex chromosomes for females?
XX chromosomes.
What are the two main types of transport mechanisms across the cell membrane?
Passive transport and active transport.
What are the two main types of transport mechanisms across the cell membrane?
Passive transport and active transport.
What type of membrane is involved in osmosis?
A selectively permeable membrane.
What is the function of ribosomes?
They synthesize proteins by translating messenger RNA.
How do cells communicate during whole-cell activity?
Through signaling molecules and receptors.
How does whole-cell activity relate to cell differentiation?
Different cell types exhibit unique whole-cell activities based on their specialized functions.
What is osmosis?
The diffusion of water across a selectively permeable membrane.
What is passive transport?
The movement of substances across the cell membrane without the use of energy.
What do lysosomes do?
They contain enzymes that break down waste materials and cellular debris.
What role do mitochondria play in a cell?
They are the powerhouse of the cell, generating energy through respiration.
Does diffusion require energy from the cell?
No, it does not require the cell to expend energy.
What is the function of ribosomes?
They are responsible for protein synthesis.
What role do proteins play in the cell membrane?
They assist in the transport of substances across the membrane.
How can changes in cell volume affect cell function?
They can disrupt cell function, especially in neurons.
What is the function of the Golgi apparatus?
It modifies, sorts, and packages proteins and lipids for secretion or use within the cell.
What is the function of the Golgi apparatus?
It modifies, sorts, and packages proteins for secretion.
What is the G1 phase in interphase?
The cell grows physically larger, copies organelles, and makes molecular building blocks for later steps.
What are the two main types of transport mechanisms through the cell membrane?
Passive transport and active transport.
What are the sex chromosomes for males?
XY chromosomes.
What is passive transport?
The movement of substances across the cell membrane without the use of energy.
What is the function of the cell membrane?
It regulates what enters and exits the cell.
What are the remaining 22 pairs of chromosomes called?
Autosomes.
What is the purpose of the endoplasmic reticulum?
It is involved in the synthesis of proteins and lipids.
What is the function of the nucleus in a cell?
It acts as the control center, housing the cell's genetic material.
What is the function of the Golgi apparatus?
It modifies, sorts, and packages proteins and lipids for secretion.
What do lysosomes do?
They contain enzymes that break down waste materials and cellular debris.
What role do transport proteins play in the cell membrane?
They facilitate the movement of substances that cannot directly cross the membrane.
What is the function of the cell membrane?
It regulates what enters and exits the cell, providing protection and structure.
What is the role of the cell membrane?
It regulates what enters and exits the cell, maintaining homeostasis.
What is passive transport?
The movement of substances across the cell membrane without the use of energy.
What is the significance of the fluid mosaic model?
It describes the structure of the cell membrane as a mosaic of various components that move freely.
What is the significance of the fluid mosaic model?
It describes the structure of the cell membrane as a mosaic of various proteins that float in or on the fluid lipid bilayer.
What role do transport proteins play in the cell membrane?
They facilitate the movement of substances that cannot directly cross the membrane.
What is the function of cilia?
They help in movement and the transport of materials across the cell surface.
What is the significance of passive membrane transport?
It allows substances to move across the cell membrane without the use of energy.
What role do mitochondria play in a cell?
They are the powerhouse of the cell, generating energy through respiration.
What are the two main types of transport mechanisms across the cell membrane?
Passive transport and active transport.
What is passive transport?
The movement of substances across the cell membrane without the use of energy.
What are the two main types of transport mechanisms across the cell membrane?
Passive transport and active transport.
What is active transport?
The movement of substances against their concentration gradient, requiring energy.
What is active transport?
The movement of substances against their concentration gradient, requiring energy.
What do lysosomes do?
They contain enzymes that break down waste materials and cellular debris.
What is active transport?
The movement of substances against their concentration gradient, requiring energy.
What is osmosis?
The diffusion of water across a selectively permeable membrane.
What is the function of the cell membrane?
It regulates what enters and exits the cell, maintaining homeostasis.
What role do transport proteins play in the cell membrane?
They facilitate the movement of substances that cannot directly cross the membrane.
What is the significance of the fluid mosaic model?
It describes the structure of the cell membrane as a flexible layer made of lipid molecules with embedded proteins.
What do lysosomes do?
They contain enzymes that break down waste materials and cellular debris.
What is the significance of the fluid mosaic model?
It describes the structure of the cell membrane as flexible and composed of various proteins and lipids.
What is synthesized in the Rough Endoplasmic Reticulum?
Proteins.
What is the purpose of the endoplasmic reticulum?
It is involved in the synthesis of proteins and lipids.
What is the purpose of the endoplasmic reticulum?
It is involved in the synthesis of proteins and lipids.
What is passive transport?
The movement of substances across the cell membrane without the use of energy.
What is the role of the Golgi apparatus?
It modifies, sorts, and packages proteins and lipids for secretion.
What happens to osmotic pressure as the number of solutes inside a cell increases?
The osmotic pressure increases.
What is osmosis?
The diffusion of water across a selectively permeable membrane.
What limits the amount of water that can enter a living cell?
Living cells have limits to how much water can enter them.
What role do transport proteins play in the cell membrane?
They facilitate the movement of specific substances across the membrane.
What can happen to a cell if water leaves it?
The cell can shrink.
What is the role of the Golgi apparatus?
It modifies, sorts, and packages proteins and lipids for secretion or use within the cell.
What is osmosis?
The diffusion of water across a selectively permeable membrane.
What happens to the DNA during the G1 phase?
The cell makes a copy of its DNA.
What is the function of the cell membrane?
It regulates what enters and exits the cell, maintaining homeostasis.
What processes does the cell cycle support?
Growth and tissue repair.
Where is the genetic material located in prokaryotic cells?
Dispersed in the cytoplasm.
What is the role of the Golgi apparatus?
It modifies, sorts, and packages proteins and lipids for secretion.
What is the purpose of the endoplasmic reticulum?
It synthesizes proteins and lipids and transports them within the cell.
What is osmosis?
The diffusion of water across a selectively permeable membrane.
What is the significance of whole-cell activity in multicellular organisms?
It allows for coordination and specialization of functions among different cell types.
What is the function of the cell membrane?
It regulates what enters and exits the cell, maintaining homeostasis.
What is the function of the cell membrane?
It regulates what enters and exits the cell.
What role do transport proteins play in the cell membrane?
They facilitate the movement of substances that cannot directly cross the membrane.
What is the role of the endoplasmic reticulum?
It is involved in the synthesis of proteins and lipids.
What do ribosomes do?
They are responsible for protein synthesis.
What is the function of the cell membrane?
It regulates what enters and exits the cell, providing protection and structure.
What are the three types of Passive Membrane Transport?
Diffusion, facilitated diffusion, and osmosis.
What is passive transport?
The movement of substances across the cell membrane without the use of energy.
What happens during Telophase?
The two new nuclei assume their normal structure, completing cell division and producing two new daughter cells.
What is the role of the Golgi apparatus?
It modifies, sorts, and packages proteins and lipids for secretion or use within the cell.
What is the function of the Golgi apparatus?
It modifies, sorts, and packages proteins and lipids for secretion.
What happens to the distribution of molecules during diffusion at equilibrium?
The distribution of molecules becomes uniform.
What do lysosomes do?
They contain enzymes that break down waste materials and cellular debris.
What is osmosis?
The diffusion of water across a selectively permeable membrane.
What is the role of the cell membrane?
It regulates what enters and exits the cell.
What is the significance of the fluid mosaic model?
It describes the structure of the cell membrane as a flexible layer made of lipid molecules with embedded proteins.
What is the significance of the fluid mosaic model?
It describes the structure of the cell membrane as a flexible layer made of lipid molecules with embedded proteins.
Is the G1 phase a dividing phase?
No, it is a nondividing phase.
What drives the movement of water in osmosis?
The difference in water (or solvent) concentration on either side of the membrane.
What are cell parts and organelles?
They are specialized structures within a cell that perform distinct functions.
What is the function of the Golgi apparatus?
It modifies, sorts, and packages proteins and lipids for secretion.
What is passive transport?
The movement of substances across the cell membrane without the use of energy.
What is osmosis?
The diffusion of water across a selectively permeable membrane.
What is osmosis?
The diffusion of water across a selectively permeable membrane.
What is the primary function of the cell membrane?
To regulate the movement of substances in and out of the cell.
What is osmosis?
The diffusion of water across a selectively permeable membrane.
What are the two main types of transport mechanisms across the cell membrane?
Passive transport and active transport.
What is the role of the endoplasmic reticulum?
It synthesizes proteins and lipids.
What is one of the primary functions of cells?
Communication.
What are ribosomes that are not attached to any other organelle called?
Free ribosomes.
What are prokaryotic cells?
Cells that lack a nucleus and membrane-bound organelles.
What is the function of cilia in cells?
To move substances over surfaces.
What is the cytoskeleton?
The internal framework of the cell.
What is the function of centrioles in a cell?
They facilitate the movement of chromosomes during cell division.
How is each cell described in terms of organization?
Each cell is a highly organized unit.
What is an example of a cellular secretion?
Saliva.
What is diffusion?
The movement of molecules from an area of higher concentration to an area of lower concentration.
What is the significance of extracellular materials in cells?
They play a role in cell communication and support.
What distinguishes eukaryotic cells from prokaryotic cells?
Eukaryotic cells have a defined nucleus and organelles, while prokaryotic cells do not.
What occurs at the end of interphase in a cell?
The cell has two complete sets of genetic material.
Can eukaryotic cells be unicellular or multicellular?
Eukaryotic cells can be both unicellular and multicellular.
What are cell parts and organelles?
Structures within a cell that perform specific functions.
What is facilitated diffusion?
A mediated transport process that moves substances from a higher to a lower concentration without requiring energy.
What is the primary focus of the study in Anatomy and Physiology?
Understanding whole-cell activity.
What is a concentration gradient?
The difference in the concentration of a solute in a solvent.
What happens when carriers in facilitated diffusion are saturated?
All carriers are bound to molecules and are busy transporting.
What is an example of a substance that can diffuse directly through the phospholipid bilayer?
Oxygen.
Which types of molecules are transported through facilitated diffusion?
Hydrophobic molecules such as glucose, amino acids, and ions.
How does the Glycocalyx help the immune system?
It allows the immune system to recognize 'self' vs. 'non-self'.
What happens during the G2 phase of interphase?
The cell grows more, makes proteins and organelles, and begins to reorganize its contents in preparation for mitosis.
What is the primary focus of the course 'Anatomy and Physiology'?
Understanding the structure and function of the human body.
What is the function of the nucleus in a cell?
It acts as the control center, housing genetic material.
What causes pathological processes like necrosis?
Toxins, infections, or traumas.
What is the role of the phospholipid bilayer in simple diffusion?
It allows non-polar, lipid-soluble substances to diffuse directly through.
What role do mitochondria play in a cell?
They are the powerhouses of the cell, generating ATP through respiration.
What role do mitochondria play in a cell?
They are the powerhouses, generating energy through respiration.
What is whole-cell activity?
The collective functions and processes carried out by a cell as a single unit.
What occurs during Metaphase?
Chromosomes align at the center of the cell.
What is the function of ribosomes?
They synthesize proteins by translating messenger RNA.