Question

Which of the following is the simplest amino acid
A) Alanine
B) Asparagine
C) Glycine
D) Tyrosine

Answer 1

Hint:Amino acids are compounds that contain carbon, hydrogen, oxygen and nitrogen. They serve as monomers for proteins and are composed of an amino group, carboxyl group, a hydrogen atom, aka a distinctive side chain, all bonded to a carbon atom, which is called the alpha carbon. In such carbons the amino group and carboxyl group are attached to the same carbon atom and also bonded with side chain molecules which determine the character of an amino acids such as polar, non polar, polar uncharged, standard amino acids and non standard amino acids.

Complete answer:
Alanine is a non polar amino acid which consists of a single methyl group as their side chain along with amino and carboxyl groups attached to alpha carbon. They are aliphatic and hydrophobic in nature. Asparagine is found to be uncharged at its side chain at pH 7, it consists of amide group as its side chain components bound through methyl group.

Tyrosine is also uncharged polar amino acids consisting of aromatic side chains bound to alpha carbon atoms. Glycine is a non polar amino acid which consist of hydrogen atom at its side chain region, they are aliphatic in nature and are not soluble in water since they are hydrophobic they are very simple yet obtain major role to play in bending of peptide chain as they do not occupy large space in secondary and tertiary structure in protein folding they are seen greatly at the bends.

Hence, the correct answer is option C.

Note:All the amino acids given in the online options belong to standard amino acids as they act as monomers in protein formation which are introduced in the peptide chain in the ribosome.