Test 3 Practice Test Key

Test 3 Practice Test Key - Practice Test 3 * I want you to...

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Practice Test 3 ** I want you to look up the answers and not simply read them. This practice test may not cover all concepts that the Exam may ask questions about** 1. The cell membrane does NOT have which of the following functions? a. Receiving information b. Import and export of molecules c. Capacity for movement and expansion d. Ability to regenerate itself 2. Which of the following are components of phospholipids a. Head group b. Hydrophilic tails c. Hydrophobic heads d. All of the above 3. A liposome is a a. An organelle that contains proteolytic enzymes b. Pure phospholipids in water c. A pokemon d. A lipid with an attached carbohydrate 4. The orientation of the membrane a. Is maintained relative to the cytosol b. Flips when vesicles leave the ER and get to their destination c. Is unimportant to the membranes function d. Is determined based on whether or not proteins are in it. 5. The cell cortex a. Consists of proteins that attach to the extracellular side of the membrane b. Aids in the movement of the cell c. Strengthens and supports the membrane d. A and C e. All of the above 6. Membrane proteins can have which of the following functions? a. Transporters b. Enzymes c. Anchors d. Receptors e. All of the above 7. Which of the following can diffuse across the bilayer a. CO2 b. H+ c. Amino acids d. OH- 8. Which of the following are not involved in active transport a. Coupled transporter b. ATP pumps c. Light driven pumps d. Channel proteins
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9. Action potentials do NOT use all a. Voltage gated Na+ channels b. Voltage gated Ca2+ channels c. Voltage gated H+ channels d. Voltage gated K+ channels 10. Gated ion channels do NOT respond to a. Voltage b. Ligands either extracellular or intracellular c. Mechanical stimulation/ stress d. Concentration gradients 11. Which of the following are important in moving a protein across the ER a. ER Signal Sequence b. Signal recognition particle c. Translocation pump d. A and B e. All of the above
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This note was uploaded on 11/29/2011 for the course BIO 218 taught by Professor Rothschild during the Spring '11 term at VCU.

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Test 3 Practice Test Key - Practice Test 3 * I want you to...

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