In glycolysis ultimately (or end product of glycolysis is)

Options

A. Ethyl alcohol
B. Acetyl CoA
C. Pyruvic acid
D. ATP

Answer

### Step-by-Step Solution:

1. **Understanding Glycolysis**: Glycolysis is the metabolic pathway that breaks down glucose (a six-carbon sugar) into smaller molecules. It is the first step in the process of cellular respiration and occurs in the cytoplasm of the cell.

2. **Initial Conversion**: The glycolysis process begins with the conversion of glucose into glucose-6-phosphate. This reaction is catalyzed by the enzyme hexokinase and requires the expenditure of one ATP molecule.

3. **Isomerization**: Glucose-6-phosphate is then converted into fructose-6-phosphate, which is an isomer of glucose-6-phosphate. This reaction is facilitated by the enzyme isomerase.

4. **Phosphorylation**: Fructose-6-phosphate is further phosphorylated to form fructose-1,6-bisphosphate. This reaction is catalyzed by the enzyme kinase and also consumes one ATP molecule.

5. **Cleavage**: The fructose-1,6-bisphosphate molecule is then split into two three-carbon molecules: dihydroxyacetone phosphate (DHAP) and glyceraldehyde-3-phosphate (G3P). This reaction is catalyzed by the enzyme aldolase.

6. **Further Conversion**: Glyceraldehyde-3-phosphate is then converted through a series of reactions into 1,3-bisphosphoglycerate, then to 3-phosphoglycerate, followed by conversion to 2-phosphoglycerate, and finally to phosphoenolpyruvate (PEP).

7. **Final Product**: The last step in glycolysis involves the conversion of phosphoenolpyruvate to pyruvate, which is a three-carbon compound. At the end of glycolysis, two molecules of pyruvate are produced from one molecule of glucose.

8. **Conclusion**: Therefore, the ultimate end product of glycolysis is **pyruvic acid** (or pyruvate).

### Final Answer:
The end product of glycolysis is **pyruvic acid**.

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