PhysiologyUT - Table of Contents Pages Practice Questions,...

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1 Table of Contents Practice Questions, and In-Class & Discussion Exercises Pages Membrane & Epithelial Transport 2 - 8 Solutions, Osmolarity & Tonicity 9-20 Communication/Reflexes/Endocrine 21-28 Neurophysiology 29-31 Cardiovascular 32-42 Respiratory 43-49 Integrated Cardio & Respiratory 50-55 Renal 56-65 Acid Base 66-69 Metabolism 70-72 Digestion 73-77 Answer Keys 78-91
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2 Membrane and Epithelial Transport 1. Which means of membrane movement . . . a) simple diffusion b) facilitated diffusion c) primary active transport d) endocytosis e) exocytosis f) secondary active transport are concentration-dependent? _______________________________________________________________ require ATP? ___________________________________________________________________________ require some input of energy other than molecular motion? _______________________________________ can be saturated? _________________________________________________________________________ require a membrane protein? _______________________________________________________________ will show competition? ____________________________________________________________________ are associated with membrane vesicles? ______________________________________________________ have rate dependent on membrane surface area? ________________________________________________ 2. Match the items in column 1 with the means by which they are most likely to be transported (column 2). In column 3, write the ONE letter that best corresponds to your rationale for selecting the means of transport. If you do not see a rationale that fits, you may write in your own rationale. Column 2: Means of transport: 1 - simple diffusion 2 - facilitated diffusion 3 - movement through a water-filled channel 4 - active transport 5 - endocytosis 6 – exocytosis Column 3: Rationale for transport: A - is polar molecule B - is nonpolar molecule C - is an ion D - is small E - is not an ion F - moving down concentration gradient G - moving against concentration gradient H - following electrochemical gradient Column 1: Movement of . .. Column 2 - Moves by Column 3 - Why? Ca 2+ from ECF into cells K + from ECF into cells steroid hormone out of endocrine cell 3. Match the transporter with all the descriptions that apply. __________ Na + -K + -ATPase A. symport E. secondary active transport __________ Na + -glucose transporter B. antiport F. facilitated diffusion __________ Ca 2+ -ATPase C. active transport __________ GLUT transporter D. cotransport
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3 4. You are studying glucose transport across rat intestine, a process identical to that we discussed in lecture. In this protocol, you take a piece of intestine and stretch it in a ring held between two chambers. Each chamber is filled with a physiological solution whose composition can be varied. The normal physiological saline contains Na, K, Cl and other ions whose concentrations approximate that of the normal ECF. Assume that all solutions are isosmotic and that there are no effects due to osmotic movement of water. An example of the setup looks like this: In the first experiment, you place a normal physiological saline solution on the basolateral side, and a saline solution that is supplemented with glucose on the apical side. You measure the rate of appearance of glucose in the basolateral solution. This is your control experiment. In the next series of experiments, you substitute choline chloride for NaCl. Choline is a large organic cation that does not bind to transport proteins.
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This note was uploaded on 09/15/2011 for the course BIO 365S taught by Professor Silverthorn during the Spring '08 term at University of Texas.

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PhysiologyUT - Table of Contents Pages Practice Questions,...

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