Chemically or bio chemically enzymes are primarily__________________?
Correct answer: C. Proteins
- A. Carbohydrates
- B. Lipids
- C. Proteins
- D. Vitamins
Explanation
Most enzymes are globular proteins whose three-dimensional shape forms the active site; a small number of catalytic RNA molecules are exceptions. Carbohydrates, lipids and vitamins may participate in metabolism but are not the primary chemical nature of enzymes.
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