Discussion
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- Question
The vitamin niacin is part of the __________ molecule.
Options- A. ferredoxin
- B. pyridoxal phosphate
- C. pyrophosphate
- D. NAD+
- Correct Answer
- NAD+
- 1. Which of these hormones is a catecholamine?
Options- A. Follitropin
- B. Norepinephrine
- C. Tetraiodothyronine
- D. Tetrahydrofolate Discuss
- 2. The symptoms of retinol excess are
Options- A. bone fragility
- B. nausea
- C. weakness
- D. all of these Discuss
- 3. Nitrate reduction can be carried out by
Options- A. only microorganism
- B. plant and microorganism
- C. only plants
- D. none of these Discuss
- 4. The products of urea cycle are
Options- A. 1 molecule of urea, 1 molecule of ammonia, 1 molecule of ATP and 1 molecule of fumaric acid
- B. 1 molecule of fumaric acid, 1 molecule of urea, 1 molecule of AMP, 2 molecules of ADP
- C. 1 molecule of aspartic acid, 1 molecule of ammonia, 1 molecule of fumaric acid, 1 molecule of ATP
- D. None of the above Discuss
- 5. How many molecules of ATP are hydrolysed to form two molecule of ammonia?
Options- A. 10
- B. 5
- C. 16
- D. 15 Discuss
- 6. Vitamins are essential because the organism
Options- A. can't synthesize these compounds at all
- B. can synthesize these compounds partially
- C. can't synthesize these compounds in the adequate amounts
- D. none of the above Discuss
- 7. ?-carotene together with ?-carotene, ?-carotene and cryptoxanthine are synthesized by
Options- A. plants
- B. animal
- C. plants and animals both
- D. none of these Discuss
- 8. Selenium is an essential component of the enzyme glutathione peroxidase which
Options- A. scavenges toxic hydoperoxycompounds in tissues
- B. reduces toxic hydoperoxycompounds in tissues
- C. oxidizes toxic hydoperoxycompounds in tissues
- D. none of the above Discuss
- 9. In the co-enzyme B12the position occupied by a cyanide ion in vitamin B12 is bonded directly to the __________ of the ribose of adenosine.
Options- A. adenine
- B. 5-6 dimethylbenzimidazole
- C. hydroxycobalamin
- D. cyanocobalamin Discuss
- 10. Acyl carrier protein (ACP) plays an important role in the biosynthesis of
Options- A. fatty acids
- B. amino acids
- C. sugars
- D. carbohydrates Discuss
Vitamins and Coenzymes problems
Search Results
Correct Answer: Norepinephrine
Correct Answer: all of these
Correct Answer: plant and microorganism
Correct Answer: 1 molecule of fumaric acid, 1 molecule of urea, 1 molecule of AMP, 2 molecules of ADP
Correct Answer: 16
Correct Answer: can't synthesize these compounds at all
Correct Answer: plants
Correct Answer: scavenges toxic hydoperoxycompounds in tissues
Correct Answer: adenine
Correct Answer: fatty acids
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