Discussion
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- Question
Lipoic acid is a co-factor of the
Options- A. pyruvic dehydrogenase
- B. ?-ketoglutaric dehydrogenase
- C. both (a) and (b)
- D. di-hydroorotate dehydrogenase
- Correct Answer
- both (a) and (b)
- 1. Which of these is a vitamin A precursor?
Options- A. Cobalamin
- B. Pyridoxine
- C. Beta-Carotene
- D. Thiamine Discuss
- 2. Which of these is a symptom of vitamin A deficiency?
Options- A. Osteoporosis
- B. Impaired taste perception
- C. Blindness
- D. Impaired blood clotting Discuss
- 3. Dihydroorotate dehydrogenase contains
Options- A. 4 flavins and 4 atoms of iron per molecule
- B. 2 flavins and 4 atoms of iron per molecule
- C. 2 flavins and 2 atoms of iron per molecule
- D. 4 flavins and 2 atoms of iron per molecule Discuss
- 4. An early sign of retinol deficiencies in man is
Options- A. night blindness
- B. keratinization
- C. xeropthalmia
- D. none of these Discuss
- 5. Biotin occurs mainly in combined forms bound to protein through
Options- A. ?-N-lysine moiety
- B. ?-S-lysine moiety
- C. ?-N-biotinyl-L-lysine
- D. ?-N-lipoyl - L-lysine Discuss
- 6. An enzyme, L-folate reductase reduces folic acid to
Options- A. hydrofolic acid
- B. dihydrofolic acid
- C. trihydrofolic acid
- D. tetrahydrofolic acid Discuss
- 7. A deficiency of Vitamin K results in a decreased level of
Options- A. prothrombin
- B. thrombin
- C. fibrin
- D. fibrinogen Discuss
- 8. A deficiency of niacin causes
Options- A. pellagra
- B. scurvy
- C. cataract
- D. anemia Discuss
- 9. Who discovered vitamin C (ascorbic acid)?
Options- A. Paul Berg
- B. Linus Pauling
- C. Albert Szent-Gyorgyi
- D. Kerry Mull is Discuss
- 10. An example of a digestive hormone is
Options- A. lipase
- B. pepsin
- C. amylase
- D. gastrin Discuss
Vitamins and Coenzymes problems
Search Results
Correct Answer: Beta-Carotene
Correct Answer: Blindness
Correct Answer: 4 flavins and 4 atoms of iron per molecule
Correct Answer: night blindness
Correct Answer: ?-N-lysine moiety
Correct Answer: dihydrofolic acid
Correct Answer: prothrombin
Correct Answer: pellagra
Correct Answer: Albert Szent-Gyorgyi
Correct Answer: gastrin
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