The difference in deoxyribose and ribose sugar is in the

Options

A. first carbon
B. second carbon
C. 4th carbon
D. 5th carbon

Answer

To understand the difference between deoxyribose and ribose sugars, we can break down the information step by step:

### Step 1: Identify the Chemical Formulas
- **Deoxyribose** has the chemical formula **C5H10O4**.
- **Ribose** has the chemical formula **C5H10O5**.

### Step 2: Analyze the Difference in Oxygen Atoms
- The key difference between deoxyribose and ribose is the presence of one oxygen atom.
- Ribose contains **5 oxygen atoms**, while deoxyribose contains **4 oxygen atoms**.

### Step 3: Locate the Position of the Oxygen Atom
- The oxygen atom that differentiates ribose from deoxyribose is located at the **second carbon** of the sugar ring.
- In ribose, the second carbon has a **hydroxyl group (OH)** attached.
- In deoxyribose, the second carbon has a **hydrogen atom (H)** instead of the hydroxyl group.

### Step 4: Conclusion
- Therefore, the main difference between deoxyribose and ribose sugar lies in the presence of a hydroxyl group at the second carbon in ribose, which is replaced by a hydrogen atom in deoxyribose.

### Final Answer:
The difference in deoxyribose and ribose sugar is in the presence of a hydroxyl group (OH) at the second carbon in ribose, which is absent in deoxyribose.

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