What is more abundant in S.E.R

Options

A. Cisternae and vesicles
B. Cisternae and tubules
C. Tubules and vesicles
D. Cisternae

Answer

**Step-by-Step Solution:**

1. **Identify the Structure**: The question asks about the Smooth Endoplasmic Reticulum (S.E.R). It is important to understand what S.E.R is and its characteristics.

2. **Understand the Components of Endoplasmic Reticulum**: The Endoplasmic Reticulum (E.R) consists of three main components:
- Cisternae
- Vesicles
- Tubules

3. **Differentiate Between S.E.R and R.E.R**: The Smooth Endoplasmic Reticulum is characterized by the absence of ribosomes, unlike the Rough Endoplasmic Reticulum (R.E.R), which has ribosomes attached to its surface.

4. **Identify the Abundant Structures in S.E.R**: Since ribosomes are absent in S.E.R, the structures that are more abundant in S.E.R are the vesicles and tubules.

5. **Conclusion**: Therefore, the most abundant components in the Smooth Endoplasmic Reticulum are the vesicles and tubules.

**Final Answer**: The vesicles and tubules are more abundant in the Smooth Endoplasmic Reticulum (S.E.R).

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