Ribosomes contain .

Options

A. RNA
B. Protein
C. DNA
D. both 1 & 2

Answer

**Step-by-Step Solution:**

1. **Identify the Components of Ribosomes:**
Ribosomes are cellular structures responsible for protein synthesis. They are composed of two main components: ribonucleic acids (RNA) and proteins.

2. **Understanding Ribosome Structure:**
Ribosomes consist of two subunits:
- A small subunit
- A large subunit
In prokaryotes, ribosomes are referred to as 70S, which includes a 30S small subunit and a 50S large subunit. In eukaryotes, ribosomes are referred to as 80S, which includes a 40S small subunit and a 60S large subunit.

3. **Clarifying the Options:**
The question provides several options regarding what ribosomes contain. The correct answer must include the components that ribosomes are made of.

4. **Conclusion:**
Since ribosomes contain RNA and proteins, the correct answer to the question "Ribosomes contain" is both RNA and proteins, which corresponds to option 4 (both 1st and 2nd).

**Final Answer:**
Ribosomes contain RNA and proteins.

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