QUIZ 4, BICH 410 (MWF 1:50 PM), Friday, Dec. 1, 1995


Clearly circle the letter corresponding to your answer for each problem. There are seven problems, six of which count 3 points, and one is worth 2 points. No partial credit given for multiple-choice questions.

R = 8.315 J/moleK
Faraday constant = 96,480 J/mole-volt

1) Which of the following statements is true about complex I (NADH dehydrogenase) of the mitochondrial electron transport chain?

2) Fatty acids are a component of:

3) Consider the transport of glucose into an erythrocyte by facilitated diffusion. When the glucose concentrations are 5 mM on the outside and 0.1 mM on the inside, the free-energy change for glucose uptake into the cell is (temperature of cell is 37 degrees C):

4) All of the following contribute to the large, negative, free-energy change upon hydrolysis of compounds such as ATP, phosphoenolpyruvate and 1,3-bisphosphoglycerate except:

5) The standard reduction potential of the NAD+/NADH half reaction is -0.32 V. The standard reduction potential of the oxaloacetate/malate half reaction is -0.175 V. When the concentrations of NAD+, NADH, oxaloacetate, and malate are all 10-5 M, the "spontaneous" reaction is:

6) The type of membrane transport that uses ion gradients as the energy source is:

7) (2 pts) What is this compound? (structure from book)