Question

Which of the following statements is false?
A. $M{{g}^{2+}}$ ions form a complex with ATP.
B. $C{{a}^{2+}}$ ions are important in blood clotting
C. $C{{a}^{2+}}$ ions are not important in maintaining the regular beating of the heart.
D. $M{{g}^{2+}}$ ions are important in the green parts of plants.

Answer 1

Try to recall that there are many metals like magnesium, iron, calcium which form a complex with ligands which are present in blood and plants. Now by using this you can easily find the false statement from the given options.

Complete step by step answer:
- We know that many metals like magnesium form complexes which are present in human blood and also in green parts of plants.
- Now, to find the false statement from the given statements, we can easily find it by inspecting each of the given statements.
- Option A: We know that ATP is the most important form of energy currency in living systems. It is also called the currency of energy. $M{{g}^{2+}}$ ions bind with ATP and form a complex in order to make ATP biologically active. So, option A is true.

- Option B: The chief element involved in clotting of blood is $C{{a}^{2+}}$, which by itself is the fourth clotting factor. So, option B is also true.

- Option C: Also, it is known to us that $C{{a}^{2+}}$ ions are required by heart so that it can contract and pump out blood to the rest part of the body. So, this option C is false.

- Option D: Also, we know that $M{{g}^{2+}}$ ion is the central atom in chlorophyll which imparts green colour to the plants. So, this option D is also true.
So, the correct answer is “Option C”.

Note: Note that metals in compounds are healthy in the human body like potassium, iron, and magnesium. They need to be in a compound to be transferred and to not get stuck in flesh and/or cause computations.