Ribosomes are composed oF which components?

Answer

### Step-by-Step Solution:

1. **Definition of Ribosomes**: Ribosomes are cellular structures that play a crucial role in protein synthesis. They are often referred to as "pallet particles" due to their appearance under the microscope.

2. **Composition of Ribosomes**: Ribosomes are primarily composed of ribonucleic acid (RNA) and proteins. The RNA component is essential for their function in synthesizing proteins.

3. **Types of Ribosomes**: Ribosomes can be classified based on the type of organism:
- **Prokaryotic Ribosomes**: These are of the 70S type, which consists of two subunits: a larger 50S subunit and a smaller 30S subunit.
- **Eukaryotic Ribosomes**: These are of the 80S type, which consists of a larger 60S subunit and a smaller 40S subunit.

4. **Membrane Structure**: Unlike many other cellular organelles, ribosomes are not surrounded by a membrane. This lack of a membrane allows them to be freely present in the cytoplasm or attached to the endoplasmic reticulum.

5. **Presence in Organisms**: Ribosomes are found in both prokaryotic and eukaryotic cells, highlighting their fundamental role in all forms of life.

### Final Answer:
Ribosomes are composed of ribonucleic acid (RNA) and proteins. They are classified into two types based on the organism: 70S in prokaryotes and 80S in eukaryotes.

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