Question:
Which of the following is protein in nature?
Which of the following is protein in nature?
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Hormone Chemical Nature:
Protein/Peptide = Insulin, Glucagon, Growth Hormone.
Steroid = Estrogen, Progesterone, Testosterone, Cortisol.
Amino acid derivative = Thyroxine, Epinephrine.
Protein/Peptide = Insulin, Glucagon, Growth Hormone.
Steroid = Estrogen, Progesterone, Testosterone, Cortisol.
Amino acid derivative = Thyroxine, Epinephrine.
Updated On: Sep 4, 2026
- Vitamin D-3
- Insulin
- Estrogen
- Testosterone
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Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Biomolecules and endocrine hormones are categorized chemically into peptide/protein, steroid, amino acid derivative, and lipid classes.
Step 2: Detailed Explanation:
1. Insulin: A peptide/protein hormone composed of 51 amino acids organized into two polypeptide chains (A chain of 21 amino acids and B chain of 30 amino acids) linked by disulfide bonds.
2. Estrogen and Testosterone: Steroid hormones synthesized from cholesterol.
3. Vitamin D-3 (Cholecalciferol): A secosteroid hormone precursor.
Thus, Insulin is proteinaceous in nature.
Step 3: Final Answer:
Therefore, Insulin is protein in nature, corresponding to option (B).
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