What is the role of pili in prokaryotic cells?
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Pili are hair-like structures that allow the transfer of DNA between bacteria and enable bacteria to adhere to each other and other surfaces.
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What is the role of pili in prokaryotic cells?
Pili are hair-like structures that allow the transfer of DNA between bacteria and enable bacteria to adhere to each other and other surfaces.
What is the function of Vacuoles in Plantae and Animalia?
In Plantae, vacuoles are large for structural support and nutrient storage; in Animalia, they are small for waste removal.
What is the function of the cytoplasm in eukaryotic cells?
The cytoplasm contains dissolved substances and enzymes in water; it is the main site of cell metabolism.
What does a thicker layer of peptidoglycan in prokaryotic cells indicate?
A thicker layer of peptidoglycan causes the cell to take up the crystal violet stain used in the Gram stain test, making it Gram-positive.
What is the function of the Nucleus in eukaryotic cells?
It contains multiple linear chromosomes with DNA associated with histone proteins and has a double membrane with pores that allow mRNA to enter the cytoplasm.
What are 80S ribosomes and where are they found?
80S ribosomes are relatively larger ribosomes used for protein synthesis, found in eukaryotic cells.
What is the nucleoid in prokaryotic cells?
The nucleoid is a region in prokaryotic cells that resembles a nucleus, where the cell's circular DNA is located.
What are some examples of membrane-bound organelles in eukaryotic cells?
Examples of membrane-bound organelles in eukaryotic cells include mitochondria, endoplasmic reticulum, Golgi apparatus, and lysosomes.
What type of ribosomes are found in prokaryotic cells?
Prokaryotic cells contain 70S ribosomes, which are involved in protein synthesis.
What is the Cell Wall Composition in Bacteria?
The cell wall is composed of peptidoglycan, providing strength and support, and preventing the cell from bursting.
What is the cytoskeleton composed of in eukaryotic cells?
The cytoskeleton in eukaryotic cells is composed of microtubules and microfilaments.
What is naked DNA in prokaryotic cells?
Naked DNA in prokaryotic cells refers to the circular DNA molecule that is not associated with proteins, located in the nucleoid region.
What type of ribosomes are found in eukaryotic cells?
Eukaryotic cells contain 80S ribosomes.
What is the Rough Endoplasmic Reticulum?
A membrane structure with a network of tubules and ribosomes attached to its surface, serving as the site of protein synthesis and responsible for transporting proteins to the Golgi Apparatus.
What is the role of the nucleus in eukaryotic cells?
The nucleus stores chromosomes, each consisting of one long DNA molecule associated with histones (proteins).
What is the cell wall composed of in prokaryotic cells?
The cell wall in prokaryotic cells is composed of peptidoglycan.
What is contained within the nucleus of eukaryotic cells?
The nucleus of eukaryotic cells contains chromosomes made of DNA bound to histones, enclosed in a double membrane with pores.
What is the Smooth Endoplasmic Reticulum?
A membrane structure with a network of tubules that lacks ribosomes, involved in lipid synthesis and detoxification.
What is the primary function of mitochondria in eukaryotic cells?
Mitochondria are double-membrane-bound organelles that provide energy through aerobic respiration.
What is the function of the flagellum in prokaryotic cells?
The flagellum is a tail responsible for locomotion in prokaryotic cells.
What are 70S ribosomes?
70S ribosomes are the type of ribosomes found in prokaryotic cells, responsible for protein synthesis and are relatively smaller than eukaryotic ribosomes.
What are 80S Ribosomes?
Ribosomes found in eukaryotic cells that are involved in protein synthesis.
What is the cytoplasm in prokaryotic cells?
The cytoplasm in prokaryotic cells is the gel-like substance within the cell membrane where cellular processes occur, but it is not divided into compartments by membranes.
What is the Golgi Apparatus?
A series of stacked, flattened membranes that modify and package proteins to be exported from the cell.
What is the structure of prokaryote cell wall?
The prokaryote cell wall is a rigid structure that provides support and protection, commonly found in Gram-positive eubacteria such as Bacillus and Staphylococcus.
How does prokaryotic cell structure vary?
Prokaryotic cell structure varies among different species, such as the absence of cell walls in phytoplasmas and mycoplasmas, but these details are not required for basic understanding.
What is the role of the Mitochondrion?
It is responsible for aerobic respiration, producing ATP in eukaryotic cells.
What is the Cytoskeleton?
A network of protein microtubules that maintains cell shape, moves organelles, and is involved in nuclear division (mitosis/meiosis) in eukaryotic cells.
What is the function of the plasma membrane in prokaryotic cells?
The plasma membrane in prokaryotic cells regulates the movement of substances in and out of the cell, maintaining homeostasis.
What is the function of a Pilus?
A structure that allows bacteria to adhere to each other and surfaces, and facilitates the exchange of genetic material between bacteria.
What is a Lysosome?
Specialized vesicles in eukaryotic cells that contain digestive enzymes.
What is the function of the plasma membrane?
The plasma membrane controls the entry and exit of substances, maintains internal chemistry, and is composed of phospholipids.
What is a Nucleoid?
A region in prokaryotic cells that contains a single circular chromosome with naked DNA, meaning no proteins are associated with it.