Week 13 Quiz

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University of New England *

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1005

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Chemistry

Date

Jan 9, 2024

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4

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Week 13 Quiz Question 1 (1 point) Which of the following enzymes is likely to be active in both the fed and fasted states? Question 1 options: Hormone-sensitive lipase Glycogen synthase Glutaminase*** Pyruvate kinase Question 2 (1 point) Which of the following enzymes is correctly paired with its activator? Question 2 options: arginase; NADH Carbamoyl phosphate synthetase I; ATP Glutaminase; citrate N-acetyl glutamate synthetase; arginine*** Question 3 (1 point) Glutamate can be deaminated by which of the following enzymes: Question 3 options:
Glutamine synthetase Arginase Glutaminase Glutamate dehydrogenase (GDH)*** Question 4 (1 point) The glucose-alanine cycle is a method of transferring ammonia from the skeletal muscle to the liver. In this process, the non-toxic carrier of ammonia is which of the following compounds? Question 4 options: Glutamine Pyruvate Urea Alanine*** Question 5 (1 point) Which of the following statements is consistent with nitrogen transport in the fasted state? Question 5 options: Glutaminase will be inactive The urea cycle will be active***
Transport of alanine from skeletal muscle will be reduced. Hepatic glutamate dehydrogenase will primarily produce glutamate Question 6 (1 point) Defects in the urea cycle directly impair the use of which of the following substrates for gluconeogenesis? Question 6 options: Glycerol Amino acids*** Fatty acids Lactate Question 7 (1 point) Which of the following reactions of the urea cycle takes place in the mitochondria? Question 7 options: The synthesis of arginine The synthesis of carbamoyl phosphate*** The synthesis of argininosuccinate The synthesis of urea
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Question 8 (1 point) Which of the following is the primary role of glutaminase in the liver? Question 8 options: To free an amine group from glutamine*** To transaminate pyruvate to alanine To convert glutamate to α-ketoglutarate To generate carbamoyl phosphate