Sex hormone is a

$A$: Lipoproteins are complex lipids and conjugated proteins.
$R$: The structure of lipoproteins is formed by fatty acids,alcohols,and amino acids.

Assertion $A$: Lipoproteins are complex lipids.
Reason $R$: The structure of a lipoprotein is formed by fatty acids,alcohol,and a non-lipid component.
Which option is correct for Assertion $A$ and Reason $R$?

Phospholipids are esters of glycerol with

Name the lipid that contains a $-COOH$ group.

The highest total energy produced per gram is found in .........