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MDCAT
Chemistry
2010

Chemistry · Chemistry of Life

Work through this past-paper style MCQ, then read the full explanation. Practice more chemistry questions on mMCQ with adaptive practice and topic analytics.

Question

Pellagra is caused by deficiency of which of the following vitamins?

Options
  • A

    A

  • B

    C

  • C

    K

  • D

    Riboflavin

  • E

    Niacin

Explanation

Deficiency of vitamin B3 (niacin) causes pellagra, a condition that causes a dark, sometimes scaly rash to develop on skin areas exposed to sunlight.
Hence, option E is the correct option.

Deficiency of vitamin A causes high infection rate, night blindness and dry skin.

Deficiency of vitamin C causes scurvy, bruising, gum and dental problems, dry hair and skin, and anaemia

Deficiency of vitamin K causes significant bleeding, poor bone development, osteoporosis and increased risk of cardiovascular diseases.

Deficiency of vitamin B2 (riboflavin) causes anaemia and cataracts, fatigue, swollen throat and blurred vision.

Deficiency of vitamin B3 (niacin) causes pellagra, a condition that causes a dark, sometimes scaly rash to develop on skin areas exposed to sunlight.
Hence, option E is the correct option.

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Tagged under Chemistry · Chemistry of Life · 2010