Question

Proteins perform many physiological functions. For example, some function as enzymes. Which of the following represents an additional function that some proteins discharge?

• A. Antibiotics
• B. Pigments making colours of flowers
• C. Pigment conferring colour to skin
• D. Hormones

Answer 1

The correct option is D Hormones

Antibiotics

Some antibiotics are derived from proteins which help in the prevention of growth or death of disease-causing microorganisms.

Pigments conferring colour to the skin

Melanin pigment confers skin pigmentation in mammals. It is a protein derivative.

Pigments making colour of flowers

In plants, anthocyanin is the major compound which provides coloration. It is not protein.

Hormones

Some of the hormones such as insulin, prolactin etc. are proteinaceous. The hormones play a vital role in regulating the physiology of our body. This is an additional function which is performed by some of the proteins.


Final answer d. Hormones