Which mineral element is associated with the regulation of water in the blood?

Which of the following mineral elements plays an important role in the synthesis of $ATP$ and carbohydrates?

Which element is required in large amounts in comparison to other micronutrients and is also a constituent of proteins involved in the transfer of electrons,such as ferredoxin and cytochromes?

Mention various forms and functions of essential mineral nutrients.

Match Column-$I$ and Column-$II$.

Column-$I$	Column-$II$
$a$. To maintain the ribosome structure	$i$. Boron
$b$. The anion-cation balance in cells	$ii$. Magnesium
$c$. Carbohydrate translocation	$iii$. Chlorine
$d$. Constituent of vitamin biotin	$iv$. Potassium
	$v$. Sulphur

Match the following columns:

Column-$I$	Column-$II$
$P$. Structural elements	$I$. $C, H, O, N$
$Q$. Energy-related chemical components	$II$. $Zn^{+2}, Mo, Mg^{+2}$
$R$. Elements involved in enzyme activation or inhibition	$III$. Potassium
$S$. Elements involved in osmotic potential	$IV$. Phosphorus, Magnesium