Study%20Questions-Chapter-6-1

Study%20Questions-Chapter-6-1 - BIOL. 1305 Spring 2011...

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BIOL. 1305 – Spring 2011 (CRN# 22530) Study Questions Chapter 6: Cell Membranes 1. In biological membranes, the phospholipids are arranged in a _______, with the _______. a. bilayer; fatty acids pointing toward each other b. bilayer; fatty acids facing outward c. single layer; fatty acids facing the interior of the cell d. single layer; phosphorus-containing region facing the interior of the cell e. bilayer; phosphorus groups in the interior of the membrane 2 The hydrophilic regions of a membrane protein are most likely to be found a. only in muscle cell membranes. b. associated with the fatty acid region of the lipids. c. in the interior of the membrane. d. exposed on the surface of the membrane. e. either on the surface or inserted into the interior of the membrane. 3. Which of the following functions as a recognition signal between cells? a. RNA b. Phospholipids c. Cholesterol d. Fatty acids e. Glycolipids 4. Because the sodium–potassium pump imports K + ions while exporting Na + ions, it is a coupled transport system called a(n) a. symport. b. antiport. c. secondary active transporter. d. facilitated transport. e. diffusion mechanism. 5. Substances move through biological membranes against concentration gradients via a. simple osmosis. b. active transport. c. reverse osmosis. d. simple diffusion. e. None of the above 6. For cells in which carbon dioxide crosses the plasma membrane by simple diffusion, what determines the rate at which carbon dioxide enters the cell? a. The concentration of carbon dioxide on each side of the membrane b. The amount of ATP produced by the cell c. The number of carrier proteins in the membrane d. The amount of energy available e. The concentration of hydrogen ions on each side of the membrane 7. Channel proteins allow ions that would not normally pass through the cell membrane to pass through via
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This note was uploaded on 04/03/2011 for the course BIOL 1305 taught by Professor Staff during the Spring '08 term at Texas El Paso.

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Study%20Questions-Chapter-6-1 - BIOL. 1305 Spring 2011...

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