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quiz6key - D. none of the above E. A and C 6. Proteins...

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Name: _______________________ Dr. Sarah Rothschild Quiz 6 1. The Na+/K+ pump pumps 3 _NA+ ___ molecules out of the cell and 2 _K+ ___ molecules into the cell. 2. __________________ moves a solute against a concentration gradient and requires energy. A. simple diffusion B. channel mediated transport C. passive transport D. active transport 3. Ion channels are always open. A. True B. False 4. The leaky K+ channel: A. maintains the resting membrane potential B. directs the flow of sodium and potassium ions C. is driven by ATP D. none of the above 5. Calcium ion movement across a membrane is important for A. muscle contraction B. creating a membrane potential C. triggering the fusion of synaptic vessels with the membrane
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Unformatted text preview: D. none of the above E. A and C 6. Proteins transport across ER, mitochondria, and chloroplast membranes by A. fusing with the membrane B. diffusion C. protein translocators D. proteins dont cross membranes Match the descriptions to their correct term. 7. _A __ carries cargo protein through nuclear pore complex 8. _C __ binds ER signal sequence to a receptor on the ER membrane 9._B __ allows proteins to be translated directly into the ER 10. _D __ allows unfolded proteins to pass a double membrane A. nuclear transport receptor B. signal sequence C. signal recognition particle D. translocation channel...
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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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