The vitamin that functions as an antioxidant and is required for the synthesis of collagen is: MCQ with Answer and Explanation

The vitamin that functions as an antioxidant and is required for the synthesis of collagen is:
A. Vitamin A
B. Vitamin K
C. Vitamin D
D. Vitamin C
Answer: Option D
Solution (By JKExamLibrary)
Vitamin C (ascorbic acid) is a water-soluble antioxidant that also acts as a cofactor for enzymes involved in collagen synthesis, carnitine synthesis, and neurotransmitter production. Deficiency causes scurvy. Vitamin A is for vision, D for bone, K for clotting. Smokers require higher vitamin C intake due to oxidative stress.

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Practice More Biology Questions

Question #1
The scientist who discovered the structure of chlorophyll was:
A. Melvin Calvin
B. Robert Woodward
C. Richard Willstätter
D. Hans Fischer

Correct Answer: Option D


Explanation:
Hans Fischer determined the structure of chlorophyll in the 1930s and synthesized hemin. Willstätter studied its composition, Calvin elucidated the carbon fixation pathway, Woodward synthesized chlorophyll.

This question belongs to: Science Biology
Question #2
In the context of human diseases, 'Elephantiasis' is caused by the filarial worm Wuchereria bancrofti, which is transmitted by the bite of the female:
A. Anopheles mosquito
B. Aedes mosquito
C. Tsetse fly
D. Culex mosquito

Correct Answer: Option D


Explanation:
Lymphatic filariasis, commonly known as elephantiasis, is a parasitic disease caused by nematode worms, primarily Wuchereria bancrofti. The infective larvae (microfilariae) are transmitted to humans through the bite of an infected female Culex mosquito (primarily Culex pipiens fatigans). The adult worms lodge in the lymphatic vessels, causing severe inflammation, blockage, and the characteristic massive swelling (elephantiasis) of the limbs and genitals. Anopheles transmits malaria, Aedes transmits dengue.

This question belongs to: Science Biology
Question #3
Tocopherol is the chemical name of which vitamin?
A. Vitamin E
B. Vitamin K
C. Vitamin B₁₂
D. Vitamin A

Correct Answer: Option A


Explanation:
Vitamin E is a group of tocopherols and tocotrienols, acting as fat-soluble antioxidants. They protect cell membranes from oxidative damage. Deficiency is rare but can cause hemolytic anemia and neurological problems.

This question belongs to: Science Biology