Fish-liver oils contain large amounts of

Vitamin $E$ is also known as

Identify the amino acids $A$,$B$,and $C$ correctly based on their side chains ($R$-groups) shown in the image.

The nitrogen content of urea is: (in $\%$)

Haemorrhagic disease of the newborn is caused by the deficiency of ..............

Given below are two statements:
Statement $I$: $A$ protein is imagined as a line, the left end represented by the first amino acid ($N$-terminal) and the right end represented by the last amino acid ($C$-terminal).
Statement $II$: Adult human haemoglobin consists of $4$ subunits (two subunits of $\alpha$ type and two subunits of $\beta$ type).
In the light of the above statements, choose the correct answer from the options given below: