Question

Which of the following processes always results in the formation of ATP?

• A. Combustion
• B. Respiration
• C. Oxidation
• D. None of these

Answer 1

The correct option is B Respiration

Respiration occurs in a slow, stepwise, enzyme controlled manner. At some steps, the released energy is enough to drive the synthesis of $ATP$. In other words, the released energy is stored in the form of high energy chemical intermediates like $ATP,NADH$ and $FAD{H}_2$.

During combustion, entire energy is liberated in the form of heat and light. $ATP$ is not formed.

During oxidation, $ATP$ formation is not mandatory.