The rough ER is so named because it has an abundance of

Options

A. mitochondria
B. lysosomes
C. Golgi bodies
D. ribosomes.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks why the rough endoplasmic reticulum (rough ER) is named "rough." This implies that we need to identify the specific structures or components that contribute to this nomenclature.

2. **Analyzing the Options**:
- **Option 1: Mitochondria**: Mitochondria are known as the powerhouse of the cell and are primarily involved in ATP production. They do not contribute to the rough texture of the rough ER. Therefore, this option is incorrect.

- **Option 2: Lysosomes**: Lysosomes are often referred to as "suicidal bags" because they contain enzymes that break down waste materials and cellular debris. They are not related to the rough ER, making this option incorrect as well.
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