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20 Cards in this Set
- Front
- Back
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For a protein to be an integral membrane protein it would have to be |
Amphipathic |
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What kinds of molecules pass through a membrane most easily |
Small and hydrophobic ions |
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Which of the following would likely move through a membrane of a lipid bilayer most rapidly |
CO2 |
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Diffusion is |
A passive process |
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Which of the following membrane activities requires energy from ATP |
A movement of sodium from a low concentration to a high concentration |
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When a plant cell, such as one from a rose stem, is submerged in a very hypotonic solution, what is likely to occur |
The cell will become turgid |
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White blood cells engulf bacteria using |
Phagocytosis |
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Which of the following allows water to cross the membrane rapidly |
Aquaporins |
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In what way do the membranes of a eukaryotic cell vary |
Certain membranes of different cells have unique proteins |
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According to the fluid mosaic model |
Phopholipids can move laterally |
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Which of the following is a characteristic of a carrier protein in a plasma membrane |
Its specific for a certain function |
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Which of the following most accurately describes permeability |
Only certain molecules can cross the cell membrane |
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Which of the following processes includes all others? |
Passive Transport |
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Ions diffuse across ion channels |
Electro Chemical |
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A bacterium engulfed in |
Lysosomes (cleaning lady) |
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Which of the following is a reasonable explanation for why unsaturated fats help keep a membrane fluid at cool temperatures |
The kinks in saturated cause it to no bond close together |
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Which of the following is true of osmosis |
Moves from low solute concentration to high solute concentration |
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In which of the following would there be for the greatest need for osmoregulation |
The salmon moving from river to ocean |
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A sodium patassium pump |
Moves 3 sodium ions out of the cell and 2 potassium ions in the cell and consumes ATP |
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Force striving for simple diffusion |
The concentration gradient while the energy source for active transport is ATP |
