Question

Which of the following yields the maximum ATP?

• A. Glycolysis
• B. Fermentation
• C. Aerobic respiration
• D. Anaerobic respiration

Hint:

ATP yield per glucose: \[ \boxed{ \begin{aligned} \text{Glycolysis} &\rightarrow 2\ \text{ATP} \text{Aerobic respiration} &\rightarrow 36\text{--}38\ \text{ATP} \end{aligned} } \] Aerobic respiration gives the highest energy yield.

Answer 1

The Correct Option is C

Step 1: Recall the ATP yield of different processes. \[ \begin{aligned} \text{Glycolysis} &\rightarrow 2\ \text{ATP} \text{Fermentation} &\rightarrow 2\ \text{ATP} \text{Anaerobic respiration} &\rightarrow \text{Less ATP than aerobic respiration} \text{Aerobic respiration} &\rightarrow 36\text{--}38\ \text{ATP} \end{aligned} \]

Step 2: Identify the process producing maximum ATP. Since aerobic respiration completely oxidizes one glucose molecule in the presence of oxygen, it produces the maximum amount of ATP. Hence, \[ \boxed{\text{Aerobic respiration}} \] is the correct answer. Therefore, \[ \boxed{(C)} \] is the correct answer.