Which of the following is not an intracellular enzyme?: (A) Enzymes of oxidative phosphorylation, (B) Salivary amylase, (C) Glycogen synthase, (D) None of the above
Answer is B. Intracellular enzymes:
Cytoplasm: Enzymes of glycolysis (conversion of glucose and glycogen to pyruvic and lactic acid).
Mitochondria: Enzymes of citric acid cycle and oxidative phosphorylation.
Lysosomes: Hydrolytic enzymes.