Bioenergetics And Metabolism(Life Sciences ) Questions and Answers

Question 1. Name the enzyme which is responsible for the conversion of pyruvate to phosphoenolpyruvate (PEP)?
  1.    Pyruvate carboxylase
  2.    Pyruvate carboxykinase
  3.    Glucose 6-phosphatase
  4.    Phosphofructokinase
Explanation:-
Answer: Option B. -> Pyruvate carboxykinase
Answer: (b).Pyruvate carboxykinase
Question 2. Which of the following is the precursor of glycogen?
  1.    Glycerol 3-phosphate
  2.    Malate
  3.    UDP-glucose
  4.    Leucine and lysine
Explanation:-
Answer: Option C. -> UDP-glucose
Answer: (c).UDP-glucose
Question 3. Which of the following are major sites for glycogen storage?
  1.    Adipose tissue
  2.    Bones
  3.    Muscle and liver
  4.    Kidney and liver
Explanation:-
Answer: Option C. -> Muscle and liver
Answer: (c).Muscle and liver
Question 4. Gluconeogenesis is also carried out in muscle and brain.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
Explanation:-
Answer: Option B. -> False
Answer: (b).False
Question 5. The priming function in glycogen synthesis is carried out by_________
  1.    Lysine
  2.    Arginine
  3.    Glycogenin
  4.    Glutamate
Explanation:-
Answer: Option C. -> Glycogenin
Answer: (c).Glycogenin
Question 6. All deoxyribonucleotide is synthesized by the ribonucleotides.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
Explanation:-
Answer: Option A. -> True
Answer: (a).True
Question 7. Name the precursor of RNA?
  1.    Glutamine
  2.    Cytidine
  3.    Orotidylate
  4.    Uridylate
Explanation:-
Answer: Option D. -> Uridylate
Answer: (d).Uridylate
Question 8. During purine synthesis the activity of amidotransferase enzyme is inhibited by the antitumor agent, mark the correct one.
  1.    Aminopterin
  2.    Methotrexate
  3.    Texol
  4.    Azaserine
Explanation:-
Answer: Option D. -> Azaserine
Answer: (d).Azaserine
Question 9. Which of the following is not the precursor of a purine ring?
  1.    Glutamine
  2.    Lysine
  3.    Glycine
  4.    Aspartate
Explanation:-
Answer: Option B. -> Lysine
Answer: (b).Lysine
Question 10. The activity of which of the following enzyme is inhibited by the chemotherapeutic agent during deoxyribonucleotide synthesis?
  1.    Dihydrofolate reductase
  2.    Ribonucleotide reductase
  3.    Thymidylate synthase
  4.    CTP synthetase
Explanation:-
Answer: Option A. -> Dihydrofolate reductase
Answer: (a).Dihydrofolate reductase
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