The number of amino acids in insulin is

Options

A. 21
B. 574
C. 51
D. 5733

Answer

To determine the number of amino acids in insulin, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Structure of Insulin**:
- Insulin is a hormone produced by the pancreas and is composed of two polypeptide chains, known as chain A and chain B.

2. **Count the Amino Acids in Each Chain**:
- Chain A contains 21 amino acids.
- Chain B contains 30 amino acids.

3. **Calculate the Total Number of Amino Acids**:
- To find the total number of amino acids in insulin, we add the number of amino acids in chain A and chain B together.
- Total amino acids = Amino acids in chain A + Amino acids in chain B
- Total amino acids = 21 + 30 = 51.

4. **Conclusion**:
- Therefore, the total number of amino acids in insulin is 51.

### Final Answer:
Insulin contains a total of 51 amino acids.

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