Online Quiz #5

Online Quiz#5 - Online Quiz#5 1 Which of the following is true about membrane proteins A They are nonpolar B Lateral diffusion occurs unless other

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Online Quiz #5 1. Which of the following is true about membrane proteins? A) They are nonpolar. B) Lateral diffusion occurs unless other cellular components restrict their movements. C) They form a rigid, solid structure. D) They are all glycoproteins. E) They readily undergo transverse diffusion (every few seconds or so). 2. If a membrane protein in an intact erythrocyte reacts with a membrane-impermeable reagent, what can you conclude about the membrane protein? A) It is an integral membrane protein. B) It is a peripheral membrane protein. C) It is not a plasma membrane protein. D) At least one domain of the protein is located on the outer face of the membrane. E) None of the above are true 3. A graph of the rate of glucose transport via the GLUT1 transporter vs. glucose concentration would have a ________ shape. A) sigmoidal B) hyperbolic C) exponential D) bell E) linear 4. Which of these statements concerning biological membranes is true? A) free fatty acids are components of most membranes B) individual lipid molecules are free to diffuse laterally in the surface of the bilayer C) individual lipid molecules in monolayer of the bilayer readily diffuse (flip-flop) to the other monolayer D) membranes only contain lipid components, with no proteins or carbohydrates. E) biological membranes are an effective barrier that prevents any solutes outside the cell from getting in. 5. What is the major function of cholesterol in the cell?
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This note was uploaded on 12/02/2010 for the course CHEM 233 taught by Professor Daub during the Fall '09 term at Waterloo.

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Online Quiz#5 - Online Quiz#5 1 Which of the following is true about membrane proteins A They are nonpolar B Lateral diffusion occurs unless other

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