Question:
The total number of amino acids present in insulin is
The total number of amino acids present in insulin is
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Insulin consists of two polypeptide chains connected by disulfide bonds and contains a total of \(51\) amino acids.
Updated On: Jun 25, 2026
- \(55\)
- \(1051\)
- \(51\)
- \(100\)
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The Correct Option is C
Solution and Explanation
Step 1: Recall the structure of insulin.
Insulin is a protein hormone secreted by the pancreas.
It consists of two polypeptide chains: \[ A\text{-chain and }B\text{-chain} \]
Step 2: Number of amino acids in each chain.
The: \[ A\text{-chain contains }21\text{ amino acids} \] and the: \[ B\text{-chain contains }30\text{ amino acids} \]
Step 3: Calculate the total number of amino acids.
\[ 21+30=51 \] Thus, insulin contains: \[ 51 \] amino acid residues.
Step 4: Final conclusion.
Hence, the total number of amino acids present in insulin is \[ \boxed{51} \]
Insulin is a protein hormone secreted by the pancreas.
It consists of two polypeptide chains: \[ A\text{-chain and }B\text{-chain} \]
Step 2: Number of amino acids in each chain.
The: \[ A\text{-chain contains }21\text{ amino acids} \] and the: \[ B\text{-chain contains }30\text{ amino acids} \]
Step 3: Calculate the total number of amino acids.
\[ 21+30=51 \] Thus, insulin contains: \[ 51 \] amino acid residues.
Step 4: Final conclusion.
Hence, the total number of amino acids present in insulin is \[ \boxed{51} \]
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