Question

A six carbon molecule, Glucose is broken down into a three carbon molecule, Pyruvate. This process takes place:

• A. in cytoplasm
• B. in mitochondria
• C. in nucleus
• D. in DNA

Hint:

Glycolysis, the breakdown of glucose into pyruvate, occurs in the cytoplasm, not in the mitochondria or nucleus.

Answer 1

The Correct Option is A

Step 1: Understanding the Process
The process described is glycolysis, where glucose (a six-carbon molecule) is broken down into two molecules of pyruvate (a three-carbon molecule). This occurs in the cytoplasm of the cell.

Step 2: Why Other Options are Incorrect
- (B) Mitochondria: Although pyruvate enters mitochondria for further processing, glycolysis happens in the cytoplasm.
- (C) Nucleus: The nucleus is involved in DNA replication and transcription, not in glycolysis.
- (D) DNA: DNA does not play a role in the breakdown of glucose into pyruvate.
Thus, the correct answer is (A) in cytoplasm.