The vitamin that functions as a coenzyme in transamination and decarboxylation of amino acids is: MCQ with Answer and Explanation

The vitamin that functions as a coenzyme in transamination and decarboxylation of amino acids is:
A. Vitamin B₂
B. Vitamin B₆
C. Vitamin B₁₂
D. Vitamin B₁
Answer: Option B
Solution (By JKExamLibrary)
Vitamin B₆ (pyridoxine, pyridoxal, pyridoxamine) is a coenzyme (pyridoxal phosphate, PLP) for many enzymes involved in amino acid metabolism, including transaminases and decarboxylases. B₁ acts in carbohydrate metabolism, B₂ in redox reactions, B₁₂ in methylation and DNA synthesis.

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Consider statements about the human nervous system: 1. The brain is protected by the cranium. 2. The spinal cord is protected by the vertebral column. 3. Neurons are non-excitable cells. Which are correct?
A. 2 and 3 only
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Correct Answer: Option C


Explanation:
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Correct Answer: Option D


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