The function of amides is all, except

Options

A. Part of functional proteins
B. Structural part of plant proteins
C. Storage of excess nitrogen
D. Transport of nitrogen

Answer

To solve the question regarding the functions of amides, we need to analyze each option provided and determine which one does not relate to the functions of amides.

### Step-by-Step Solution:

1. **Understanding Amides**:
- Amides are secondary metabolites that play a crucial role in plant growth and development. They are involved in various physiological processes.

2. **Analyzing the Options**:
- **Option A: Part of functional proteins**:
- This statement suggests that amides are involved in the functional aspects of proteins. However, amides are primarily structural components rather than functional ones. Therefore, this option is likely incorrect in the context of amides' functions.

- **Option B: Structural part of plant proteins**:
- This statement indicates that amides contribute to the structure of plant proteins. This is a true function of amides, as they are indeed structural components of proteins in plants.

- **Option C: Storage of excess nitrogen**:
- Amides are known to store excess nitrogen in plants. This is a correct function of amides, making this option valid.

- **Option D: Transport of nitrogen**:
- Amides also play a role in the transport of nitrogen within plants. This is another correct function of amides.

3. **Identifying the Correct Answer**:
- Since we are looking for the option that does not relate to the functions of amides, we can conclude that **Option A** ("part of functional proteins") is the correct answer, as it does not accurately describe the role of amides.

### Final Answer:
The function of amides is all, except **Option A: Part of functional proteins**.

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