By loss of ribosomes RER converts in

Options

A. SER
B. Golgibody
C. Lysosome
D. Microtubules

Answer

### Step-by-Step Solution:

1. **Understanding RER**: The Rough Endoplasmic Reticulum (RER) is a type of endoplasmic reticulum that is studded with ribosomes on its cytoplasmic surface, which gives it a "rough" appearance. The primary function of RER is the synthesis and processing of proteins.

2. **Role of Ribosomes**: Ribosomes are essential for protein synthesis. They translate messenger RNA (mRNA) into polypeptide chains, which then fold into functional proteins. If ribosomes are lost from the RER, the structure can no longer perform its primary function of protein synthesis.

3. **Loss of Ribosomes**: When ribosomes detach from the RER, it loses its rough appearance and begins to take on characteristics of the Smooth Endoplasmic Reticulum (SER). The SER does not have ribosomes and is involved in lipid synthesis and detoxification processes.

4. **Conversion to SER**: The conversion of RER to SER occurs when ribosomes are lost. This transformation indicates a shift in the function of the endoplasmic reticulum from primarily protein synthesis to lipid synthesis and other metabolic processes.

5. **Identifying the Correct Answer**: Among the options provided:
- Option 1: SER (Smooth Endoplasmic Reticulum)
- Option 2: Golgi bodies
- Option 3: Lysosome
- Option 4: Microtubules

The correct answer is **Option 1: SER**, as the loss of ribosomes from RER leads to its conversion into SER.

### Final Answer:
By loss of ribosomes, RER converts into **Smooth Endoplasmic Reticulum (SER)**.

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