zone of exclusion surrounds

Options

A. Golgi complex and centriole
B. Mitochondria and plastids
C. Nucleus and endoplasmic reticulum
D. Ribosome and lysosome

Answer

To solve the question "zone of exclusion surrounds," we need to analyze the options provided and understand the concept of the zone of exclusion in cellular biology.

### Step-by-Step Solution:

1. **Understanding the Zone of Exclusion**: The zone of exclusion refers to a specific area surrounding certain organelles in a cell where other organelles are absent. This is particularly noted around the Golgi complex.

2. **Evaluating the Options**:
- **Option 1: Golgi complex and centriole**: The Golgi complex is known to have a zone of exclusion around it, where other organelles like ribosomes and mitochondria are not present. The centriole also does not have other organelles nearby.
- **Option 2: Mitochondria and plastids**: These organelles do not typically have a zone of exclusion surrounding them.
- **Option 3: Nucleus and endoplasmic reticulum**: Similar to mitochondria and plastids, these organelles do not exhibit a zone of exclusion.
- **Option 4: Ribosome and lysosome**: Ribosomes are often found in close proximity to other organelles, and lysosomes do not have a zone of exclusion.

3. **Identifying the Correct Answer**: Based on the analysis, the only option that correctly identifies organelles surrounded by a zone of exclusion is **Option 1: Golgi complex and centriole**.

### Final Answer:
The zone of exclusion surrounds the **Golgi complex and centriole**.

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