60 Top METABOLISM Multiple Choice Questions and Answers pdf

1)The final electron acceptor in the ETS is ATP synthetase?

A. True
B. False

Ans: B

2)Oxygen gas is used to oxidize the last organic component of the ETS?

A. True
B. False

Ans: A

3)Cytochromes are not found in the Krebs cycles but are important in transporting electrons derived from the Krebs cycles?

A. True
B. False

Ans: A

4)Urea is a byproduct of protein synthesis?

A. True
B. False

Ans: B

5)Sulfur is an element found in the ETS?

A. True
B. False

Ans: A

6)ATP synthetases form ATP in the mitochondrion’s outer compartment as H+ ions diffuse into that compartment?

A. True
B. False

Ans: B

7)Chemiosmosis production of ATP occurs in the Kreb’s cycle?

A. True
B. False

Ans: B

8)An oxygen debt results if too much oxygen is used up in the Kreb’s cycle reactions?

A. True
B. False

Ans: B

9)Glyceraldehyde phosphate is a part of the citric acid cycle?

A. True
B. False

Ans: B

10)The specific carrier through which glucose enters mucosal cell is GLUT-5?

A. True
B. False

Ans: B

11)Beta-oxidation gives rise to acetyl compounds that can enter the Kreb cycle reactions?
A. True
B. False

Ans: A

12)In the Krebs cycle, ATP is made when a phosphate is transferred from GTP to ADP?

A. True
B. False
Ans: A

13)Glycogen synthase (or synthetase) builds glycogen by linking together glucose molecules?

A. True
B. False

Ans: A

14)Coenzyme Q is formed when pyruvic acid is reduced?

A. True
B. False

Ans: B

15)A person’s metabolic rate is positively affected by body temperature?

A. True
B. False

Ans: A

16)Pyruvic acid is more reduced than lactic acid

A. True
B. False

Ans: B

17)Glycogen phosphorylase hydrolyzes (breaks down) glycogen, giving rise to glucose-phosphate molecules?

A. True
B. False

Ans: A

18)Substrate-level phosphorylation of ADP occurs at the end of the ETS?

A. True
B. False

Ans: A

19)NAD can become oxidized in the cytosol and in the mitochondrion?

A. True
B. False

Ans: A

20) Glucose-phosphate molecules lose their phosphate groups when the glucose becomes part of glycogen?

A. True
B. False

Ans: A

21)Lipogenesis is more common during starvation?

A. True
B. False

Ans: B

22)Iron is an element found in the ETS?

A. True
B. False

Ans: A

23)Decarboxylation occurs in the Kreb’s cycle and during the time when pyruvate is oxidized?

A. True
B. False

Ans: A

24) The fermentation reaction allows NADH to be oxidized?

A. True
B. False

Ans: A

25) Gluconeogenesis primarily involves the conversion of glycerol and amino acids to glucose in the liver?

A. True
B. False

Ans: A

26) Alpha-ketoglutarate is made inside the mitochondrion?

A. True
B. False

Ans: A

27) An acetyl compound is formed when pyruvic acid becomes reduced by NADH?

A. True
B. False

Ans: B

28)Coenzyme A binds with citric acid to begin the Kreb’s cycle?

A. True
B. False

Ans: B

29)Niacin (or nicotinic acid) is part of an electron carrier in glycolysis and the Kreb’s cycle?

A. True
B. False

Ans: A

30)Glucose and galactose, and some fructose molecules exit intestinal mucosal cells through GLUT-2 carriers?

A. True
B. False

Ans: A

METABOLISM Objective type Questions and Answers ::

31)Vitamin B2 is in the coenzyme called NAD?

A. True
B. False

Ans: B

32)FAD becomes oxidized in the Kreb’s cycle?

A. True
B. False
Ans: B

33)A calorimeter more directly measures the amount of heat liberated in the body than does a respirometer?

A. True
B. False

Ans: A

34)To hydrolyze glycogen and release glucose into the blood, the liver uses glucokinase and glucose phosphatase?

A. True
B. False

Ans: B

35)Vitamin B5 is important to getting energy-containing compounds into the Krebs cycles?

A. True
B. False

Ans: A

36) Carbon dioxide in humans forms when pyruvate is converted to lactate?

A. True
B. False

Ans: B

37) Cytochromes are found in the Kreb’s cycle?

A. True
B. False

Ans: B

38) Acetyl CoA forms in the cytosol and then enters the mitochondrion to bind to citric acid?

A. True
B. False

Ans: B

39)Beta-oxidation is associated with the catabolism of fatty acids?

A. True
B. False

Ans: A

40)Copper is an element in the ETS?

A. True
B. False

Ans: A

41)Malate-aspartate is a system that shuttles electrons from cytosolic NADH to the ETS?

A. True
B. False

Ans: A

42)The TCA cycle is responsible for making urea?

A. True
B. False

Ans: B

43)Ornithine is in a series of reactions whereby the liver uses CO2 and NH3 to make urea, which is excreted?

A. True
B. False

Ans: A

44)The minimum amount of energy required to keep a person alive when they are not exercising, digesting food, or under any stress is called basal metabolic rate?

A. True
B. False

Ans: A

45)Glycerol phosphate shuttles electrons from NADH molecules in the cytoplasm to the ETS in the mitochondrion?

A. True
B. False

Ans: A

46)Citrulline is an important compound when considering how the body eliminates ammonia?

A. True
B. False
Ans: A

47)The hydrolysis of fatty acids is called transamination and results in the formation of coenzyme A molecules?

A. True
B. False

Ans: B

48)Glucose and galactose enter mucosal cells in the intestine by passing through carriers simultaneously with sodium ions?

A. True
B. False

Ans: A

49)A cell must expend energy in the form of ATP to get a pyruvate into the mitochondrion for further oxidation?

A. True
B. False

Ans: A

50)Reporting BMR as Kcal/hour allows logical comparison of different-size individuals?

A. True
B. False

Ans: B

51)The Kreb’s cycle does not use O2 directly but will eventually cease if O2 is not present in the mitochondrion?

A. True
B. False

Ans: A

52)Glucokinase phosphorylates glucose after glucose enters the cell?

A. True
B. False

Ans: A

53)Piloerection is a heat-loss mechanism?

A. True
B. False

Ans: B

54)The Krebs cycles would eventually cease if oxygen is not available for the ETS?

A. True
B. False

Ans: A

55)A person’s metabolic rate increases as outside temperature increases toward room temperature?

A. True
B. False

Ans:B

56)Fumaric acid is one of the glycolysis compounds?

A. True
B. False

Ans: B

57)Fermentation would occur if the ETS stopped working, even if oxygen is still available?

A. True
B. False

Ans: A

58)Thyroxine secretion would be part of a heat-producing mechanism?

A. True
B. False

Ans: A

59)Electrons coming out of the Krebs cycle reactions are not transported by the malate-aspartate or glycerol phosphate shuttles?

A. True
B. False

Ans: A

60)Oxygen is not used directly in the Kreb’s cycle?

A. True
B. False

Ans: A