Question

How many ATP are used in glycolysis?

• A. 1 ATP
• B. 2 ATP
• C. 3 ATP
• D. 4 ATP

Hint:

Glycolysis is an anaerobic process, producing ATP without the need for oxygen. It is the first step in both aerobic and anaerobic respiration.

Answer 1

The Correct Option is B

Step 1: During glycolysis, 2 ATP molecules are consumed in the early steps to convert glucose into a more reactive form. Later in glycolysis, 4 ATP molecules are produced, resulting in a net gain of 2 ATP.

Step 2: Glycolysis occurs in the cytoplasm and involves the breakdown of glucose into pyruvate, yielding 2 ATP molecules.

Conclusion: The correct answer is that 2 ATP molecules are used in glycolysis.