Pyruvic acid is a product of

Options

A. Acetic acid
B. Acetyl CoA
C. Starch
D. Glucose.

Answer

**Step-by-Step Solution:**

1. **Understanding Pyruvic Acid**: Pyruvic acid, also known as pyruvate, is a key intermediate in several metabolic pathways. It is primarily known as the end product of glycolysis.

2. **Identifying Glycolysis**: Glycolysis is the metabolic pathway that converts glucose (a six-carbon sugar) into pyruvate (a three-carbon compound). This process occurs in the cytoplasm of the cell and involves a series of enzymatic reactions.

3. **Glucose Breakdown**: During glycolysis, one molecule of glucose is broken down into two molecules of pyruvic acid. This means that for every glucose molecule that undergoes glycolysis, two pyruvate molecules are produced.

4. **Analyzing the Options**:
- **Acetic Acid**: This is not a product of glycolysis; it is involved in other metabolic pathways.
- **Acetyl CoA**: Acetyl CoA is produced from pyruvic acid after glycolysis, not the other way around.
- **Starch**: Starch is a polysaccharide that must first be broken down into glucose before it can enter glycolysis.
- **Glucose**: This is the starting substrate for glycolysis and is ultimately converted into pyruvic acid.

5. **Conclusion**: Since pyruvic acid is produced directly from the breakdown of glucose during glycolysis, the correct answer is glucose.

**Final Answer**: Pyruvic acid is a product of glucose.

---