Glycolysis produces energy in which form?

• A. ATP
• B. GTP
• C. FADH2
• D. NADPH

Answer: (A)

Verified step by step guidance

1. Understand the process of glycolysis: Glycolysis is the first step in the breakdown of glucose to extract energy for cellular metabolism. It occurs in the cytoplasm of the cell and does not require oxygen.
2. Identify the main products of glycolysis: Glycolysis converts one molecule of glucose into two molecules of pyruvate, with a net gain of two molecules of ATP and two molecules of NADH.
3. Recognize the role of ATP in glycolysis: ATP (adenosine triphosphate) is the primary energy currency of the cell. During glycolysis, ATP is produced directly through substrate-level phosphorylation.
4. Differentiate between ATP and other energy carriers: While ATP is produced in glycolysis, other molecules like GTP, FADH2, and NADPH are involved in different metabolic pathways. GTP is similar to ATP but is used in protein synthesis and other cellular processes. FADH2 and NADPH are involved in the electron transport chain and biosynthetic reactions, respectively.
5. Conclude which energy form is produced in glycolysis: Based on the steps above, glycolysis primarily produces ATP as the form of energy.