Question

__________ enzyme synthesises ATP from ADP.

• A. ATP synthase
• B. Hexokinase
• C. Isomerase
• D. Pyruvate kinase

Answer 1

The correct option is A ATP synthase

ATP synthase is an enzyme that synthesises ATP from ADP. Complex V (ATP synthase) of ETC is involved with the synthesis of ATP. Complex V has two components, $F_0$ and $F_1$. $F_0$ forms the channel for the passage of protons and $F_1$ has a site for the synthesis of ATP from ADP and inorganic phosphate.

Hexokinase is an enzyme that helps in converting glucose to glucose-6-phosphate during glycolysis.

Isomerase is an enzyme that helps in converting glucose-6-phosphate to fructose-6-phosphate during glycolysis.

Pyruvate kinase is an enzyme that helps in converting phosphoenolpyruvate to pyruvic acid during glycolysis.