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Which of the following statements is false?

  • Option 1)

    Mg^{2+}  ions form a complex with ATP

  • Option 2)

    Ca^{2+}  ions are important in blood clotting

  • Option 3)

    Ca^{2+}  ions are not important in maintaining the regular beating of the heart.

  • Option 4)

    Mg^{2+}   ions are important in the green parts of plants.

 

Answers (1)

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As learnt in

Biological Significance of Calcium -

1. Required for the formation of the teeth and bones.

2. Essential for neuromuscular function, interneuronal transmission, cell membrane integrity. 

3. Required for blood coagulation.

4. Acts as a secondary messenger in cell signalling.

-

 

 Ca2+ is involved in generation and transmission of current to the heart muscles and is therefore, necessary for maintaining regular heartbeat.


Option 1)

Mg^{2+}  ions form a complex with ATP

This option is incorrect

Option 2)

Ca^{2+}  ions are important in blood clotting

This option is incorrect

Option 3)

Ca^{2+}  ions are not important in maintaining the regular beating of the heart.

This option is correct

Option 4)

Mg^{2+}   ions are important in the green parts of plants.

This option is incorrect

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