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Question

Which of the following statements is false?
  1. Mg2+ ions form a complex with ATP.
  2. Ca2+ ions are important in blood clotting.
  3. Ca2+ ions are not important in maintaining the regular beating of the heart.
  4. Mg2+ ions are important in the green parts of plants.

A
Ca2+ ions are not important in maintaining the regular beating of the heart.
B
Mg2+ ions form a complex with ATP.
C
Ca2+ ions are important in blood clotting.
D
Mg2+ ions are important in the green parts of plants.
Solution
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Ca2+ ions are important in maintaining the regular beating of the heart. Ca2+ ions are also important in blood clotting and are required to trigger the contraction of muscle.

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