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10 Cards in this Set
- Front
- Back
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Explain the term equilibrium
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Equilibrium is the state at which the concentration of a substance is the same throughout a space.
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Explain the differences between isotonic, hypertonic and hypotonic solutions.
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isotonic has an equal amount of solute in the cell as in the environment
hypertonic has a greater amount of solute in environment than in the cell hypotonic has a greater amount of solute in the cell than the environment |
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What would happen if you put a frog cell in salt water?
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The egg will loose water and will shrivel up.
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Explain pinocytosis
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It is "cell drinking". The cell will bring fluid into the cell through the cell membrane.
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Explain how the Na+/K+ pump allows the glucose to be brought into the cell.
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The Na+/K+ pump pumps 3 Na+ out of the cell for every 2 K+ in creating a concentration gradient of Na+ across the membrane. Na+ will then diffuse across the membrane with glucose back into the cell through coupled channels.
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What type of a receptor is triggered by a ligand binding?
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A chemically gated channel.
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Which neurotransmitter stimulates muscle cells to contract?
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Acetylcholine
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How are voltage gated channels triggered?
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By a positive change in voltage in the area of the channel.
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What is the function of the proton pump?
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It actively pumps H+ across the membrance into the cell creating a concentration gradient. The H+ will then diffuse to the exterior of the cell. The movement of H+ across the membrane to the exterior of the cell causes the conversion of ADP --> ATP
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Describe exocytosis.
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It is the binding of waste vacuoles to the cellular membrane for the release of waste from the interior of the cell into the interior.
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