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Chemically ribosomes are composed of...

Chemically ribosomes are composed of

A

RNA and protein

B

r- RNA, protein and DNA

C

RNA , protein & lipid

D

none of these

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution: 1. **Understanding Ribosomes**: - Ribosomes are cellular structures responsible for protein synthesis. They are often referred to as the "protein factories" of the cell. 2. **Chemical Composition**: - Ribosomes are composed of two main components: ribonucleic acid (RNA) and proteins. 3. **Types of Ribosomes**: - There are two types of ribosomes based on the type of organism: - Prokaryotic ribosomes (70S) - Eukaryotic ribosomes (80S) 4. **Subunit Structure**: - Both prokaryotic and eukaryotic ribosomes consist of two subunits: - Prokaryotes: Large subunit (50S) and small subunit (30S) - Eukaryotes: Large subunit (60S) and small subunit (40S) 5. **Absence of Membrane**: - Ribosomes are not surrounded by any membrane, distinguishing them from other cellular organelles. 6. **Conclusion**: - Given the options provided, the correct answer is that ribosomes are composed of RNA and proteins. ### Final Answer: Ribosomes are chemically composed of RNA and proteins. ---
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