Quiz 6 - 6 The receptor molecule for a hydrophobic ligand...

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10-10-08 Quiz 6 1. The typical resting potential of a neuron is about … a. – 70 mV b. -55mV c. 0 mV d. 50 mV e. -70 V 2. Which of these involves transport “up-gradient”? Transport of: a. K + out of cell b. Na + out of cell c. Na + into cell 3. The question in #2 concerns…. a. simple diffusion. b. facilitated diffusion. c. active transport. d. voltage gated channel proteins. e. ligand gated channels. 4. Cytoplasmic continuity between adjacent animal cells is provided by ____ junctions. a. tight b. gap c. desmosome d. plasmodesmata 5. A cell in a hypertonic environment will ______ water. a. gain b. lose
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Unformatted text preview: 6. The receptor molecule for a hydrophobic ligand molecule will be located… a. in the cytosol inside the cell. b. on the cell surface. True (mark “a”) or False (mark “b”) 7. The main electrogenic pump of plants, fungi, and bacteria is a proton pump. 8. An example of bulk transport of specific substances by cells is pinocytosis. 9. The sodium-potassium pump moves 3 Na + ions out of and 2 K + ions into the cell. 10. The refractory period of an action potential is due to the inactivation of Na + channels. Key: 1.a, 2.b, 3.c, 4.b, 5.b, 6.a, 7.a, 8.b, 9.a, 10.a...
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This note was uploaded on 02/24/2010 for the course BIO 311 C taught by Professor Mcclelland during the Spring '09 term at University of Texas.

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