Which of the following member attached to the alpha carbon of amino acid is NOT constant?
a) carboxyl group
b) amino group
c) alkyl group
d) Hydrogen
Explanation: alkyl group is represented by R which is different in different amino acids
The R-group attached to the alpha carbon of amino acid is……..
a) alkyl group
b) Hydrogen
c) carbonyl group
d) both a and b
In which of the following amino acid, R-group is Hydrogen?
a) Glycine
b) Alanine
c) Valine
d) Methionine
In which of the following amino acid, R-group is methyl (CH3)?
a) Glycine
b) Alanine
c) Valine
d) Methionine
Which of the following amino acid/s has/have aromatic R-group?
a) phenyl alanine
b) Tyrosine
c) Tryptophan
d) all of these
Which of the following amino acid/s has/have positively charged R-group?
a) Lysine
b) Arginine
c) Histidine
d) all of these
