Ribose sugar is not a component of

Options

A. AMP
B. ATP
C. DNA
D. RNA.

Answer

To determine which option ribose sugar is not a component of, we will analyze each option provided in the question: AMP, ATP, DNA, and RNA.

### Step-by-Step Solution:

1. **Analyze AMP (Adenosine Monophosphate)**:
- AMP is composed of a nitrogenous base (adenine), a ribose sugar, and one phosphate group.
- Since AMP contains ribose sugar, it cannot be the correct answer.

2. **Analyze ATP (Adenosine Triphosphate)**:
- ATP consists of a nitrogenous base (adenine), a ribose sugar, and three phosphate groups.
- As ATP also contains ribose sugar, it is not the correct answer.

3. **Analyze DNA (Deoxyribonucleic Acid)**:
- DNA is made up of a nitrogenous base (adenine, thymine, cytosine, or guanine), a deoxyribose sugar, and phosphate groups.
- Since DNA contains deoxyribose sugar and not ribose sugar, this is a potential correct answer.

4. **Analyze RNA (Ribonucleic Acid)**:
- RNA consists of a nitrogenous base (adenine, uracil, cytosine, or guanine), a ribose sugar, and phosphate groups.
- RNA contains ribose sugar, thus it cannot be the correct answer.

### Conclusion:
The option that ribose sugar is not a component of is **DNA**.

### Final Answer:
**DNA**