Cholesterol is a.....

$A$ typical fat molecule is composed of:

Match the following columns correctly:

Column $I$	Column $II$
$(a)$ Oleic acid	$(p)$ Short-chain saturated fatty acid
$(b)$ Palmitic acid	$(q)$ Long-chain saturated fatty acid
$(c)$ Crotonic acid	$(r)$ Short-chain unsaturated acid
$(d)$ Butyric acid	$(s)$ Long-chain unsaturated fatty acid

Under prolonged starvation, the brain receives energy from:

$S$ - Statement: Lipids that contain non-lipid components in addition to alcohol and fatty acids in their structure are called complex lipids.
$R$ - Reason: Lipoproteins contain protein as a non-lipid component in their structure.

$A$: Linolenic acid is an essential fatty acid.
$R$: Linolenic acid cannot be synthesized in human beings.