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15 Cards in this Set
- Front
- Back
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What is the general function of an organelle?
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Allows genetic information to be translated into cell function
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What is the proteinaceous supporting network of a cell?
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Cytoskeleton
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What is the largest organelle in a cell?
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Mitochondria
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Where can mitochondria be found and what is it's function?
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Mitochondria accumulate in parts of cytoplasm where utilization of energy is more intense. The function is to provide energy for chemical and mechanical work.
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The mitochondria and nuclear envelop have this unnique structural component in common...
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Double Membrane (2 bilayers)
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Where does the Kreb cycle take place and where can oxidation enzymes be found?
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Mitochondrial Matrix
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Is the cristae a folding of the outer or inner mitochondrial membrane? Is this membrane highly porous?
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Inner Mito. Membrane; no the inner membrane is less porous than the outer membrane
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What organelle translates mRNAs into proteins and permits the synthesis of multiple copies of a protein?
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Ribosomes
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Where can ribosomes be found?
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Either free in the cytoplasm (called free polysomes) or attached to rER
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What forms an enclosed continuous network of intercommunicating channels and sacs?
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Endoplasmic Reticulum
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What are the functions of the ER?
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synthesizing, packaging, and processing of various cell substances
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Describe rough endopaslmic reticulum (rER).
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Consists of parallel stacks of flattened cisternae studded with ribosomes that synthesize protins not destined for the cytoplasm
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Name some examples of proteins that the rER synthesizes.
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Secretory Proteins (Collagen), cell membrane protiens, and lysosomal enzymes
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What are some other protein-making cells?
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Erthroblasts, eosinophils, plasma cells, and pancreatic acinar cells
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Where does ALL protein synthesis begin?
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on free polyribosomes (not attached to the ER)
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