Natural silk is a

What is the $pH$ of $0.01 \ M$ glycine solution? For glycine,$K_{a1} = 4.5 \times 10^{-3}$ and $K_{a2} = 1.7 \times 10^{-10}$ at $298 \ K$.

The functional groups present in Asparagine,a nonessential amino acid,are

Amide group is present in

What does hemoglobin in red blood cells primarily contain?

Which of the following compounds does not exist as a zwitterion?