Biochemistry Objective Questions { Carbohydrate }

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36. Citric acid accumulation would

A. stimulate phosphofructokinase activity

B. stimulate fructose 1,6 diphosphatase activity

C. inhibit phosphofructokinase activity

D. both (b) and (c)

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37. Which of the following is not involved in the biosynthesis of DNA?

A. Energy from ATP

B. Mononucleotides

C. Carbonic anhydrase

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38. Which of the following would be considered a part of metabolism?

A. Biosynthetic pathways that build DNA

B. Catabolic pathways that break down complex carbohydrates

C. The capture of light energy for use in making glucose

D. All of the above

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39. Insulin

A. stimulates gluconeogenesis and glycolysis

B. stimulates gluconeogenesis and inhibits glycolysis

C. inhibits gluconeogenesis and glycolysis

D. inhibits gluconeogenesis and stimulates glycolysis

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40. What is present in the stomach to prevent self-digestion?

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41. Patients suffering from Von Gierke's disease are unable to perform gluconeogeneis because they have a defective

A. lactate dehydrogenase

B. glucose 6 phosphatase

C. pyruvate carboxylase

D. none of these

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42. The multistep pathways of metabolism are efficient because they

A. locate all of the enzymes for a pathway in the same place within the cell

B. use the same substrate for all of the enzymes in the pathway

C. use the same enzyme for all of the substrates in the pathway

D. spread the enzymes for a pathway into several different organelles

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