Home Chemistry S and P - Block Elements (S - Block Elements Not In Syllabus ) Alkali Metals What is the biological importance of and i…
Chemistry S and P - Block Elements (S - Block Elements Not In Syllabus ) Alkali Metals Single Correct MCQ
Published on: August 13, 2026

What is the biological importance of and ions in cell fluids like blood plasma?

A
They participate in transmission of nerve signals.
B
They regulate the number of red and white blood corpuscles in the cell.
C
They can be present in any amount in the blood since they are absorbed by the cells.
D
They regulate the viscosity and colour of the blood.

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The correct answer is:
A

and ions participate in the transmission of nerve signals, in regulating the flow of water across cell membrane.

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