OPSC OAS 2020 PrelimsScience & TechnologyQuestion 14
Solved previous year question from the OPSC OAS/OCS 2020 Preliminary Examination (General Studies), with the official answer key and a detailed explanation.
Question
Albinism is caused due to the deficiency of a/an:
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Answer & Explanation
Correct answer: (B) Enzyme
- Albinism is caused due to the deficiency of an enzyme called Tyrosinase. This enzyme is essential for the production of melanin, the pigment responsible for giving colour to the skin, hair, and eyes. When tyrosinase is absent or deficient, melanin cannot be produced, resulting in the characteristic features of albinism — very pale skin, white hair, and light-coloured eyes.
the other options are incorrect
- (A) Hormone:Hormonal deficiency causes conditions like dwarfism (growth hormone), diabetes (insulin), hypothyroidism (thyroid hormone), not albinism
- (C)Vitamin:Vitamin deficiency causes diseases like scurvy (Vitamin C), rickets (Vitamin D), beriberi (Vitamin B1), night blindness (Vitamin A), not albinism
- (D) Metal:Metal deficiency causes conditions like anaemia (iron), goitre (iodine), dental caries (fluorine), not albinism
