General Science – Biology MCQs

181. Which component in light causes suppression of melatonin produced by the pineal gland?

(A) Red
(B) Blue
(C) Green
(D) Indigo

Correct Answer: (B) Blue

182. The Chlorophyll cells within the plant leaves are perfectly optimized to absorb which of the following waves of the Sun Light?

(A) Green
(B) Red & Blue
(C) Red & Yellow
(D) Yellow and Blue

Correct Answer: (B) Red & Blue

183. Which among the following suspension in water is often called milk of magnesia because of its milk-like appearance?

(A) Magnesium Carbonate
(B) Magnesium Hydroxide
(C) Magnesium Lactate
(D) Magnesium Oxide

Correct Answer: (B) Magnesium Hydroxide

184. Kazimierz Funk or Casimir Funk, was a Polish biochemist, generally credited with the first formulation of the concept of which of the following ?

(A) Amino Acids
(B) DNA
(C) RNA
(D) Vitamins

Correct Answer: (D) Vitamins

185. Which among the following are the building blocks of human body ?

(A) Muscles
(B) Cells
(C) Neurons
(D) Proteins

Correct Answer: (B) Cells

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