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Quiz 2-28 key - A selective to a certain ion B promiscuous...

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Quiz 02-28 key Q1. Diffusion of solutes across a membrane is best described as A. The movement of solutes from regions of high concentrations to regions of low concentrations B. The movement of solutes from regions of low concentrations to regions of high concentrations C. The movement of solutes when the concentrations on either side of the membrane are equals. Answer: A. Q2. In facilitated diffusion, channel and carrier proteins aid in the movement of solutes in the direction of their concentration gradients True False Answer: True Q3. Ion channels are often gated channels involved in active transport of ions True False Answer: False Q4. In general, ion channels are:
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Unformatted text preview: A. selective to a certain ion B. promiscuous C. selective to a group of ions of similar electrical charges Answer: A. Q5. All forms of active transport across the membrane directly use the hydrolysis of ATP to provide energy for transport True False Answer: False. Q6. Pinocytosis and phagocytosis are terms that refer to a form of A. Plasmolysis B. exocytosis C. endocytosis Answer: C. Q7. Receptor–mediated endocytosis is A. a highly specific form of uptake of molecules at sites called coated pits B. the fusion of endosomes that contain cholesterol with lysosomes C. a highly specific for of exocytosis Answer: A....
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