Home > General Knowledge> Vitamins, Minerals, Coenzymes and Deficiency Diseases

21 . The occurrence of metals such as iron or molybdenum in some flavoproteins can
A. form chelation
B. stabilize the semiquinone
C. de-stabilize the semiquinone
D. all of these

22 . Vitamin B12 (Cobalamin) is only synthesized by
A. plants B. fishes
C. animals D. micro-organisms

23 . Which of the following are reduced coenzymes?
A. ATP and GTP
B. NAD+ and FAD
C. NADH and FADH2
D. Coenzyme A and ubiquinone

24 . The absence of ascorbic acid in the human diet gives rise to
A. rickets B. beri-beri
C. cataract D. pernicious anemia

25 . Vitamins are essential because the organism
A. can't synthesize these compounds in the adequate amounts
B. can synthesize these compounds partially
C. can't synthesize these compounds at all
D. none of the above




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