38. Movement of water across membranes is facilitated by proteins called: a. transportins. b. hydropermeases. c. annexins. d. aquaporins. e. selectins. 39. The specificity of the potassium channel for K+ over Na+ is mainly the result of the: a. hydrophobicity of the channel. b. phospholipid composition of the channel. c. presence of carbohydrates in the channel. d. differential interaction with the selectivity filter protein. e. presence of cholesterol in the channel. 40. Glycolysis is the name given to a metabolic pathway occurring in many different cell types. It consists of 11 enzymatic steps that convert glucose to lactic acid. Glycolysis is an example of: a. a net reductive process. b. aerobic metabolism. c. fermentation. d. oxidative phosphorylation. e. anabolic metabolism. 41. The conversion of 1 mol of fructose 1,6-bisphosphate to 2 mol of pyruvate by the glycolytic pathway results in a net formation of: a. 1 mol of NAD+ and 2 mol of ATP. b. 1 mol of NADH and 1 mol of ATP. c. 2 mol of NADH and 2 mol of ATP. d. 2 mol of NAD+ and 4 mol of ATP. e. 2 mol of NADH and 4 mol of ATP. 42. When a mixture of glucose 6-phosphate and fructose 6-phosphate is incubated with the enzyme phosphohexose isomerase, the final mixture contains twice as much glucose 6-phosphate as fructose 6-phosphate. Which one of the following statements is most nearly correct, when applied to the reaction below (R = 8.315 J/mol·K and T = 298 K)? Glucose 6-phosphate ? fructose 6-phosphate a. ?G'° is -1.7 kJ/mol. b. ?G'° is incalculably large and positive. c. ?G'° is incalculably large and negative. d. ?G'° is +1.7 kJ/mol. e. ?G'° is zero.
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38. Movement of water across membranes is facilitated by proteins called: a. transportins. b. hydropermeases. c. annexins. d. aquaporins. e. selectins. 39. The specificity of the potassium channel for K+ over Na+ is mainly the result of the: a. hydrophobicity of the channel. b. phospholipid composition of the channel. c. presence of carbohydrates in the channel. d. differential interaction with the selectivity filter protein. e. presence of cholesterol in the channel. 40. Glycolysis is the name given to a metabolic pathway occurring in many different cell types. It consists of 11 enzymatic steps that convert glucose to lactic acid. Glycolysis is an example of: a. a net reductive process. b. aerobic metabolism. c. fermentation. d. oxidative phosphorylation. e. anabolic metabolism. 41. The conversion of 1 mol of fructose 1,6-bisphosphate to 2 mol of pyruvate by the glycolytic pathway results in a net formation of: a. 1 mol of NAD+ and 2 mol of ATP. b. 1 mol of NADH and 1 mol of ATP. c. 2 mol of NADH and 2 mol of ATP. d. 2 mol of NAD+ and 4 mol of ATP. e. 2 mol of NADH and 4 mol of ATP. 42. When a mixture of glucose 6-phosphate and fructose 6-phosphate is incubated with the enzyme phosphohexose isomerase, the final mixture contains twice as much glucose 6-phosphate as fructose 6-phosphate. Which one of the following statements is most nearly correct, when applied to the reaction below (R = 8.315 J/mol·K and T = 298 K)? Glucose 6-phosphate ↔ fructose 6-phosphate a. ΔG'° is -1.7 kJ/mol. b. ΔG'° is incalculably large and positive. c. ΔG'° is incalculably large and negative. d. ΔG'° is +1.7 kJ/mol. e. ΔG'° is zero.
Adi S.
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The enzyme complex class of enzymes is associated with the dlertron Iyases [ramsnad hycrolases choln, which are ligases. For every dominant one glucose tramienses Tdi that is metabolized, quldoltoutiates how many net ATP e0 every = one Pocuted (etycotysis, glucose that (5 5 ex pet e Urer? TCA ETC, and = metabolized E Oridathve how many Phosphorylation? 'net ATP are Produced 'aerobic Which of the following reactions follow FADH: cunnal L FAD) undcito elacton reduction? What is the purpose of pumping the electrons out of the transport chain? The electron matrix pumps protons out of the matrix into the cytoplasm. As a result, the ETC; creates an osmotic difference between the matrix and the intermembrane space. During heavy exercise, pyruvate is metabolized to acetic acid through which pathway? Alcoholic fermentation or oxidative phosphorylation? JCAcydk regenerates NAD'?. During oxidative phosphorylation, where is the energy for synthesizing ATP obtained? Oxidation zincd? electronmotive CyC oxidation (protonmotive force) or anabolism? Which of the following biochemicals is used to store electrons in NADH? ATP, Acetyl-CoA, hemoglobin, or sphingolipids? The fluid mosaic model governs the diffusion of which of the following biochemicals? CoQ, seroids, phospholipids, sphingolipids, or all of these biochemicals? The complete oxidation of an acyl-CoA that contains an 18-carbon fatty acid would yield how many acetyl CoA?
Madhur L.
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