In animal cells, lipid- like steroidal hormones are synthesized in

Options

A. rough Endoplasmic Reticulum (RER)
B. smooth Endoplasmic Reticulum (SER)
C. Golgi apparatus
D. lysosomes

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks where lipid-like steroidal hormones are synthesized in animal cells.

2. **Identifying the Options**: The options provided are:
- RER (Rough Endoplasmic Reticulum)
- SER (Smooth Endoplasmic Reticulum)
- Golgi apparatus
- Lysosome

3. **Analyzing RER**: The Rough Endoplasmic Reticulum (RER) has ribosomes attached to its surface. Its primary function is protein synthesis, not lipid synthesis. Therefore, RER is not the correct answer.

4. **Analyzing SER**: The Smooth Endoplasmic Reticulum (SER) lacks ribosomes and is involved in lipid synthesis. This includes the production of lipid-like substances, such as steroidal hormones. Thus, SER is a strong candidate for the answer.

5. **Analyzing Golgi Apparatus**: The Golgi apparatus is responsible for modifying, packaging, and transporting proteins and lipids but does not synthesize them. Therefore, it is not the correct answer.

6. **Analyzing Lysosome**: Lysosomes contain hydrolytic enzymes that help in digestion of various substances within the cell. They do not play a role in the synthesis of hormones. Hence, lysosomes are not the correct answer.

7. **Conclusion**: Since the SER is specifically involved in the synthesis of lipids, including steroidal hormones, the correct answer to the question is the Smooth Endoplasmic Reticulum (SER).

**Final Answer**: Lipid-like steroidal hormones are synthesized in the Smooth Endoplasmic Reticulum (SER).

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