The amount of which of the following elements is greatest in protoplasm?

Match the following columns and select the correct option.

Column-$I$ (Component)	Column-$II$ (% of total cellular mass)
$P$. Proteins	$I$. $2$
$Q$. Carbohydrates	$II$. $5-7$
$R$. Lipids	$III$. $1$
$S$. Nucleic acids	$IV$. $3$
$T$. Ions	$V$. $10-15$

What percentage of water occurs of the total cellular mass?

$A$ substance that...........is considered to be a chemical compound.

Arrange the steps for obtaining the acid-soluble and acid-insoluble fractions in the correct sequence.
$I -$ Filtration
$II -$ Slurry (paste)
$III -$ Grinding with trichloroacetic acid
$IV -$ Taking living tissue
$V -$ Obtaining acid-soluble and acid-insoluble fractions

The major part of the dry weight of a living organism is made up of . . . . . . .