BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Glycine is the only amino acid with no asymmetric (chiral) carbon because it has two hydrogens attached to alpha carbon.

Detailed explanation-2: -Glycine is the only amino acid with no chiral carbon (asymmetric carbon).

Detailed explanation-3: -All the standard amino acids except for glycine are chiral because they all have four different substituents attached to their carbon (C ) atom.

Detailed explanation-4: -Two of the standard amino acids, isoleucine and threonine, have a second asymmetric carbon in addition to their -carbons, namely their -carbons.

Detailed explanation-5: -The remaining two covalent bonds of glycine’s C carbon are are linked to hydrogen atoms. Thus, glycine is a symmetrical structure where all mirror images are chemically and spatially identical.