Peptidyl transferase enzyme found on :-

Options

A. Cytoplasm
B. E.R.
C. Golgibody
D. Ribosomes

Answer

**Step-by-Step Solution:**

1. **Understanding Peptidyl Transferase**: Peptidyl transferase is an enzyme that plays a crucial role in protein synthesis. It catalyzes the formation of peptide bonds between amino acids, which are the building blocks of proteins.

2. **Analyzing the Options**:
- **Option 1: Cytoplasm**: The cytoplasm is the fluid that fills the cell and contains various organelles. It is not the site of peptidyl transferase activity.
- **Option 2: Endoplasmic Reticulum**: The endoplasmic reticulum is involved in the synthesis of proteins and lipids, but it does not directly contain peptidyl transferase.
- **Option 3: Golgi Body**: The Golgi body is responsible for sorting and packaging proteins for secretion or delivery to other organelles. It does not have peptidyl transferase activity.
- **Option 4: Ribosomes**: Ribosomes are the cellular structures where protein synthesis occurs. They contain the peptidyl transferase enzyme, which facilitates the addition of amino acids to the growing polypeptide chain.

3. **Conclusion**: Based on the analysis of the options, the correct answer is that the peptidyl transferase enzyme is found in **Ribosomes**.

**Final Answer**: Peptidyl transferase enzyme is found on **Ribosomes**.

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