Many coenzymes are derived from
Correct answer: B. vitamins of the B group
- A. minerals absorbed from the soil
- B. vitamins of the B group
- C. fatty acids stored in adipose tissue
- D. the amino acids of the enzyme itself
Explanation
NAD is made from niacin, FAD from riboflavin and coenzyme A from pantothenic acid, so a deficiency of these vitamins cripples respiration and produces widespread symptoms rather than one local effect. This is the biochemical reason a vitamin is needed in very small quantities but cannot be omitted. Minerals supply cofactors instead, which is the parallel case.
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About Characteristics of Enzymes
Enzymes are globular biological catalysts that lower activation energy without being consumed, usually showing specificity for particular substrates. Questions cover active sites, enzyme substrate complexes, the lock and key and induced fit models, intracellular and extracellular action, and the effects of denaturation, while distinguishing enzymes from non biological catalysts.
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