What is the function of mitochondria?
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Site of energy metabolism and synthesis of high-energy ATP.
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What is the function of mitochondria?
Site of energy metabolism and synthesis of high-energy ATP.
What is contained in the interior (matrix) of mitochondria?
Soluble and insoluble enzymes, RNA, and DNA.
What is the function of lysosomes in animals?
Metabolism of materials ingested by endocytosis.
What do peroxisomes in animals or glyoxysomes in plants contain?
Catalase and other oxidative enzymes.
What is the function of chloroplasts in plants?
Sites of photosynthesis; convert light energy into chemical energy (ATP).
What is the molecular composition of the cell membrane?
Bilayer of proteins (50%) and lipids (50%) and some carbohydrate.
What is contained in the cytoplasm?
Cytoskeleton made of proteins, small molecules, soluble proteins, enzymes, nutrients, and salts in aqueous solution.
What is the biological function of the cell membrane?
It serves as a selectively permeable boundary for entry and exit of nutrients and waste, location of receptors for signaling, and some important enzyme activities.
What does the nucleus contain?
Genomic DNA, histone proteins as chromatin, and RNA.
What is the biological function of the nucleus?
It serves as the storage of genetic information, site of DNA replication, and transcription to RNA.
What are the structural features of the endoplasmic reticulum with ribosomes?
Flat, single-membraned vesicles of lipid and protein; ribosomes consist of RNA and proteins.
What is the biological function of the endoplasmic reticulum with ribosomes?
It provides surfaces on which ribosomes bind for protein synthesis.
What are the structural features of the Golgi apparatus?
Flattened vesicles of lipid, protein, and polysaccharide.
What is the biological function of the Golgi apparatus?
It is responsible for the secretion of cell waste products and is the site of protein processing.
