Deoxyribose sugar in DNA is

Options

A. `C_(5)H_(10)O_(5)`
B. `C_(5)H_(10)O_(4)`
C. `C_(6)H_(12)O_(6)`
D. `C_(6)H_(14)O_(5)`

Answer

### Step-by-Step Solution:

1. **Understanding Deoxyribose**:
- Deoxyribose is a sugar that is a component of DNA (Deoxyribonucleic Acid). It is a type of pentose sugar, which means it contains five carbon atoms.

2. **Chemical Formula of Ribose**:
- The chemical formula for ribose, which is the sugar found in RNA (Ribonucleic Acid), is C₅H₁₀O₅. This indicates that ribose has five carbon (C) atoms, ten hydrogen (H) atoms, and five oxygen (O) atoms.

3. **Structure of Ribose**:
- Ribose has a five-carbon ring structure with one oxygen atom in the ring. The structure can be represented as follows:
- Carbon 1 (C1) is attached to a hydroxyl group (–OH).
- Carbon 2 (C2) is also attached to a hydroxyl group (–OH).
- Carbon 3 (C3) is attached to another hydroxyl group (–OH).
- Carbon 4 (C4) is attached to a hydroxyl group (–OH).
- Carbon 5 (C5) is attached to a –CH₂OH group.

4. **Modification to Form Deoxyribose**:
- To form deoxyribose from ribose, we need to remove one oxygen atom from the second carbon (C2). This is what gives deoxyribose its name, as "deoxy" means "without oxygen."

5. **Chemical Formula of Deoxyribose**:
- After removing the oxygen from C2, the new formula for deoxyribose becomes C₅H₁₀O₄. This means that while the number of carbon and hydrogen atoms remains the same, the number of oxygen atoms decreases from five to four.

6. **Conclusion**:
- Therefore, the deoxyribose sugar in DNA has the chemical formula C₅H₁₀O₄.

### Final Answer:
The deoxyribose sugar in DNA is C₅H₁₀O₄.

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