Bio Ch5 Quiz.docx

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The spontaneous movement of perfume molecules from an area of high concentration (bottle) to an area of low concentration (room) is an example of: A.None of these choices B.Active transport C.Pinocytosis D.Facilitated diffusion E.Phagocytosis F. Exocytosis G.Osmosis H.Diffusion Answer Key: H Question 2 of 12 Score: 0.5 (of possible 0.5 points) Oxygen and carbon dioxide move across membranes by: A . Exocytosis B.Facilitated diffusion C.Chemiosmosis D . Osmosis E.None of these choices F. Active transport G . Phagocytosis
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H . Receptor mediated endocytosis I. Diffusion Answer Key: I Question 3 of 12 Score: 0.5 (of possible 0.5 points) The movement of a substance across a membrane from an area of low concentration to an area of high concentration is: A . Phagocytosis B.Exocytosis C.Osmosis D . Active transport E.None of these choices F. Receptor mediated endocytosis G . Passive transport H . Pinocytosis Answer Key: D Question 4 of 12 Score: 1.5 (of possible 1.5 points) Fill in the blank with a single word. Spelling is important! The basic structure of cell membranes is a(n) {phospholipid} bilayer. In cell membranes, there are also a variety of {proteins} which have diverse functions embedded and attached to this bilayer.
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In animal cells the steroid
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