anatomy and physiology 42) Gluconeogenesis is the process in which A) glucose is
ID: 276999 • Letter: A
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anatomy and physiology
42) Gluconeogenesis is the process in which A) glucose is converted into carbon dioxide and water B) glucose is formed from noncarbohydrate precursors C) glycogen is formed D) glycogen is broken down to release glucose 42) 43) Prostaglandins play a role in 43) A) skeletal muscle contraction C) control of blood pressure B) control of blood volume D) noninflammatory responses 44) Heat-loss mechanisms do not include 44) A) vasoconstriction of peripheral blood vessels B) the evaporation of sweat C) reducing activity D) behavior measures such as wearing light, loose clothing 45) Many factors influence BMR. What is the most critical factor? 45) A) an individual's body weight B) the way an individual metabolizes fat C) the ratio of surface area to volume (weight) of the body D) the way skeletal muscles break down glycogen 46) Which of the following molecules are considered key molecules at metabolic crossroads? 46) A) glucose-6-phosphate, lactic acid, acetyl CoA B) glucose-6-phosphate, pyruvic acid, acetyl CoA C) acetone, beta-hydroxybutyric acid, ATP D) ATP, pyruvic acid, lactic acid 47) Which of the following is not true of beta oxidation? 47) A) It occurs in the mitochondrion. B) It involves the anabolism of fats. C) Fatty acids are broken into acetic acid fragments. D) Every second carbon is reduced. 48) 48) Oxidation reduction reactions A) may involve the loss of hydrogen and electrons B) are rarely coupled together C) occur via the gain of hydrogen or the loss of oxyger D) utilize hydrogenases 49) 49) Which of the following is correct? A) Glycolysis relies on substrate-level oxidation for the four ATP produced in this pathway B) Most ATP from cellular respiration are produced directly in the Krebs cycle. C) Okidation of FADH2 eventually yields four ATP via oxidative phosphorylation. D) Most of the ATP are produced by substrate-level phosphorylation.Explanation / Answer
42 B. glucose is formed from non carbohydrate precursors
43. C. control of blood pressure
44. A. vasoconstriction of peripheral blood vessels
45. C. the ratio of surface area to volume (weight) of the body
46. B. glucose 6 phosphate, pyruvic acid and acetyl CoA
47. B. it involves the anabolism of fats
48. A. may involve the loss of hydrogen and electrons
49. C. oxidation of FADH2 eventually yields 4 ATP via oxidative phosphorylation
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