Multiple Choice Questions- Amino acid and protein chemistry
1-A mutation has changed an isoleucine residue of a protein to Glutamic acid, which
statement best describes its location in a hydrophilic exterior-
a) On the surface since it is hydrophilic in nature
b) In side the core of the protein since it is hydrophobic in nature
c) Any where inside or outside
d) Inside the core of protein since it has a polar but uncharged side chain
2- Glycine and proline are the most abundant amino acids in the structure of-
a)Hemoglobin
b) Myoglobin
c) Insulin
d) Collagen
3- Some proteins contain additional amino acids that arise by modification of an amino
acid already present in a peptide, examples include-
a) 4 -hydroxy proline
b) 5- hydroxy Lysine
c) Gamma Amino Butyric Acid
d) All of the above
4- Choose the incorrect statement out of the followings-
a) Only L amino acids are found in the biological system
b) Glycine is optical inactive
