Pentose sugars are involved in

Options

A. HMS
B. EMP
C. TCA cycle
D. None of these

Answer

**Step-by-Step Solution:**

1. **Identify the Role of Pentose Sugars**: Pentose sugars are five-carbon sugars that play a crucial role in various metabolic pathways, particularly in the synthesis of nucleotides and nucleic acids.

2. **Understand the Pathways Involved**: The main pathway where pentose sugars are involved is the Hexose Monophosphate Shunt (HMS), also known as the Pentose Phosphate Pathway (PPP). This pathway is essential for the production of NADPH and ribose-5-phosphate.

3. **Evaluate the Options**:
- **Option 1: HMS (Hexose Monophosphate Shunt)**: This is the correct answer as pentose sugars are directly involved in this pathway.
- **Option 2: EMP (Embden-Meyerhof-Parnas pathway)**: This pathway is primarily involved in glycolysis and does not specifically involve pentose sugars.
- **Option 3: TCA Cycle (Tricarboxylic Acid Cycle)**: This cycle is involved in the oxidation of acetyl-CoA and does not directly involve pentose sugars.
- **Option 4: None of these**: Since HMS is a valid option, this is incorrect.

4. **Conclusion**: Based on the evaluation, the correct answer is that pentose sugars are involved in the Hexose Monophosphate Shunt (HMS).

**Final Answer**: Pentose sugars are involved in the Hexose Monophosphate Shunt (HMS).

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