RNA is different from DNA because RNA contains

Options

A. ribose sugar and thiamine
B. ribose sugar and uracil
C. deoxyribose sugar and thiamine
D. deoxyribose sugar and uracil

Answer

To answer the question "RNA is different from DNA because RNA contains," we need to analyze the components of RNA and DNA.

### Step-by-Step Solution:

1. **Identify the Components of RNA and DNA**:
- RNA (Ribonucleic Acid) and DNA (Deoxyribonucleic Acid) are both nucleic acids but have different structures and components.
- RNA contains the sugar ribose, while DNA contains the sugar deoxyribose.

2. **Examine the Nitrogenous Bases**:
- RNA has four nitrogenous bases: adenine (A), guanine (G), cytosine (C), and uracil (U).
- DNA has four nitrogenous bases as well: adenine (A), guanine (G), cytosine (C), and thymine (T).

3. **Compare the Sugars**:
- The sugar in RNA is ribose, which has one more oxygen atom than the sugar in DNA (deoxyribose).
- Deoxyribose lacks one oxygen atom compared to ribose.

4. **Identify the Correct Option**:
- The options provided are:
- A) Ribose sugar and thiamine
- B) Ribose sugar and uracil
- C) Deoxyribose sugar and thiamine
- D) Deoxyribose sugar and uracil
- From our analysis, we know that RNA contains ribose sugar and uracil, while DNA contains deoxyribose and thymine.

5. **Conclusion**:
- Therefore, the correct answer is **B) Ribose sugar and uracil**.