Choose the Best Answer · Q21
Q.Which of the following statement is false ? (NEET - Phase - I)
a) Ca²⁺ ions are not important in maintaining the regular beating of the heart
b) Mg²⁺ ions are important in the green parts of the plants
c) Mg²⁺ ions form a complex with ATP
d) Ca²⁺ ions are important in blood clotting
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Start your 14-day free trial to unlock the full solution →Step 1. Calcium ions are well established as essential to normal heart function -- Ca²⁺ influx through cardiac muscle cell channels drives the contraction phase of each heartbeat, so they ARE important in maintaining the regular beating of the heart. Statement (a), which claims the opposite ('are NOT important'), is therefore the false statement.
Step 2. Magnesium ions genuinely are important in the green parts of plants, since Mg is the central metal of chlorophyll (as covered in Section 5.7), so statement (b) is true. …
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