Select the wrong statement

Options

A. The building blocks of lipids are amino acids
B. Majority of enzymes contain a non-protein part called the prosthetic group
C. The thylakoids are arranged one above the other like a stack of coins forming a granum
D. Crossing-over occurs at the pachytene stage of Meiosis I

Explanation

To solve the question "Select the wrong statement," we need to evaluate each of the provided statements one by one.

### Step-by-Step Solution:

1. **Statement Analysis**:
- **Statement 1**: "The building blocks of lipids are amino acids."
- This statement is incorrect. The building blocks of lipids are fatty acids and glycerol, not amino acids. Amino acids are the building blocks of proteins.

- **Statement 2**: "Majority of enzymes contain a non-protein part called the prosthetic group."
- This statement is correct. Many enzymes are composed of proteins and may also contain non-protein components called prosthetic groups, which are essential for their activity.

- **Statement 3**: "The thylakoids are arranged one above the other like a stack of coins forming a granum."
- This statement is also correct. Thylakoids are indeed arranged in stacks known as granum within chloroplasts.

- **Statement 4**: "Crossing over occurs at the pachytene stage of meiosis 1."
- This statement is correct. Crossing over, which is the exchange of genetic material between homologous chromosomes, occurs during the pachytene stage of prophase I in meiosis.

2. **Conclusion**:
- Based on the analysis, the wrong statement is **Statement 1**: "The building blocks of lipids are amino acids."

### Final Answer:
The wrong statement is: **"The building blocks of lipids are amino acids."**

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