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12 Cards in this Set
- Front
- Back
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Lysosomes
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Contains digestive enzymes
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Ribosomes
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may be found embedded in the membrane of the endoplasmic reticulum
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What is responsible for distribution of chromosomes during cell division?
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Centrosome
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What cell type possesses the greatest number of mitochondria ?
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Cardiac muscle cell.
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Simple diffusion is NOT influenced by..
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Availability of ATP
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What is true of BOTH simple diffusion and facilitated diffusion?
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They both involve movement of a substance from an area of high concentration to an area of lower.
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Osmosis is the movement of..
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Water from a high concentration to low concentration, and low solute to high solute.
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A hypertonic solution contains..
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a greater concentration of solute than a cell/
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Placing ethyrocytes in this solution would not effect the net movement of water..
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0.9% NaCl, 5% glucose, and 5% dextrose.
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Example of receptor - mediated active transport.
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removal of ldl's from bloodstream, carried out by liver cells.
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How does active transport mechanisms differ from passive transport mechanisms?
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Passive requires no atp and moves from higher to lower concentration. Ex. Filtration
Active requires atp, and moves against gradient. ex.Carrier mediated , vescular transport. |
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Simple diffusion
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Movement of particles as a result of their constant random motion . Example: Koolaid. No atp is required.
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