Question

Chemically hormones are

• A. Proteins, steroids, and biogenic amines
• B. Biogenic amines only
• C. Steroids only
• D. Proteins only

Answer 1

The correct option is A

Proteins, steroids, and biogenic amines

The correct option is A.

Explanation of the correct option:

1. A hormone is a diverse group of biomolecules produced by endocrine glands and they have various roles in the biological system.
2. They are essential for developmental changes and maintaining internal physiological balance in the body.
3. Hormones can be of many types based on their chemical nature- peptide hormones (e.g. insulin) , steroid hormones (e.g. androgens), protein hormones (e.g. growth hormone), and biogenic amines (e.g. catecholamines).

Explanation of the incorrect options:

Option B:

All hormones are not biogenic amines. Catecholamines are biogenic amines.

Option C:

All hormones are not steroid hormones. Steroid hormones are androgens. Examples are testosterone, estrogen, progesterone, glucocorticoids (cortisol), and mineralocorticoids.

Option D:

All hormones are not protein hormones. Protein hormones are composed of protein or peptide molecules. Insulin, glucagon, and pituitary hormones are peptide hormones.

Final answer: Chemically hormones are proteins, steroids, and biogenic amines.