Chap005 - Chapter 05 - Test Bank: Membrane Structure,...

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Chapter 05 - Test Bank: Membrane Structure, Synthesis, and Transport Chapter 05 Test Bank: Membrane Structure, Synthesis, and Transport Multiple Choice Questions 1. Which of the following organisms is likely to contain biomembranes? A. plants B. animals C. prokaryotes D. plants and animals E. All living organisms contain biomembranes. Bloom's Level: Understand Section: 5.01 Topic: Cells 2. Cellular membranes are A. fluid. B. solely composed of lipids. C. composed of a single layer of amphipathic molecules. D. selective to the transport of gases and small molecules only. E. characteristic of eukaryotes, but not prokaryotes. Bloom's Level: Understand Section: 5.01 Topic: Cells 3. Which of the following is the major lipid found in membranes? A. steroids B. cholesterol C. triglycerides D. phospholipids E. saturated fatty acids Bloom's Level: Remember Section: 5.01 Topic: Cells 1-1
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Chapter 05 - Test Bank: Membrane Structure, Synthesis, and Transport 4. Which of the following is NOT true of the plasma membrane? A. It is composed of an extracellular and intracellular layer of phospholipids. B. The extracellular and intracellular layers or leaflets are highly symmetrical. C. The membrane contains peripheral proteins. D. Integral proteins span through the membrane. E. The membrane contains glycolipids and glycoproteins. Bloom's Level: Understand Section: 5.01 Topic: Cells 5. Which of the following statements about plasma membranes is INCORRECT? A. They are composed of phospholipids. B. They have both integral and peripheral proteins. C. They are relatively rigid structures. D. They are composed of two leaflets of phospholipids. E. They function to separate the extracellular and intracellular environment. Bloom's Level: Understand Section: 5.01 Topic: Cells 6. Scientists unearth a Wooly Mammoth from the Siberian Ice Sheath and discover that a eukaryotic "amoeba"-like cell is still alive. Which component of the cell membrane might contribute to maintaining the fluidity of plasma membranes under freezing conditions? A. peripheral proteins B. high levels of long fatty acyl tails within the lipid bilayer C. high levels of unsaturated fatty acyl tails within the lipid bilayer D. absence of cholesterol E. high levels of saturated fatty acyl tails within the lipid bilayer Bloom's Level: Understand Section: 5.01 Topic: Cells 1-2
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Chapter 05 - Test Bank: Membrane Structure, Synthesis, and Transport 7. Which of the following statements is CORRECT about biomembranes? A. The phospholipid tails interact with water. B. The phospholipid head groups are repelled by water. C. Electron microscopy indicates the membrane looks like train tracks with two light lines of lipids separated by a dark line containing proteins. D.
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This note was uploaded on 10/29/2010 for the course BIO 1300 taught by Professor E.m during the Spring '10 term at N.C. Central.

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Chap005 - Chapter 05 - Test Bank: Membrane Structure,...

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