Give an account of the biological importance of `Na^(+)` and `K^(+)` ions.

Explanation

`Na^+` ions participate in the transmission of nerve signals.
`Na^+` ions regulates the flow of water across cell membranes.
`Na^+` ions responsible for transport of sugars and amino acids into cells.
`K^+` ions are useful in activating enzymes.
`K^+` ions participate in the oxidation of glucose to produce ATP.
`K^+` along with `Na^+` responsible for the transmission of nerve signals.