Skip to content
doubtly
Sign up
Log in to upvote 0 Log in to downvote
Topic: Modern periodic law and periodic table, s, p, d, f blocks· Classification of Elements and Periodicity in Properties

Which one of the following statements is correct?

1. Mg plays roles in neuromuscular function and interneuronal transmission.

2. The daily requirement of Mg and Ca in the human body is estimated to be 0.2 - 0.3 g.

3. All enzymes that utilise ATP in phosphate transfer require Ca as the cofactor.

4. The bone in human body is an inert and unchanging substance.

Doubtly Asked NEET UG 2023 neet Save WhatsApp Report
Sign in to comment

1 answer

Log in to upvote 0 Log in to downvote

Best answer

Answer: 2. The daily requirement of Mg and Ca in the human body is estimated to be 0.2 - 0.3 g.

Key idea: Recall the biological roles of Mg and Ca (NCERT).

  • Option 1 is wrong: neuromuscular function and interneuronal transmission are mainly roles of Ca (and Na/K), whereas Mg works with enzymes using ATP.
  • Option 2 is correct: the daily requirement of Mg and Ca is about 200-300 mg (0.2-0.3 g).
  • Option 3 is wrong: such enzymes need Mg, not Ca, as the cofactor.
  • Option 4 is wrong: bone is a living tissue, continually remodelled.
Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report
Was this answer helpful?
Sign in to comment

Your answer

Log in or create a free account to answer this question.