Enzymes are (a) vitamins (b) proteins
Enzymes are
(a) vitamins
(b) proteins
(c) carbohydrates
(d) fats
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(b) Enzymes are proteins that catalyze chemical reactions. Almost all processes in a biological cell need enzymes in order to occur at significant rates. The set of enzymes made in a cell determines which metabolic pathways occur in that cell.
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