1. Ninhydrin with evolution of CO2 forms a
blue complex with
a) Peptide bond
b) α-Amino acids
c) Serotonin
d) Histamine
2. The most of the ultraviolet absorption of
proteins above 240 nm is due to their
content of
a) Tryptophan
b) Aspartate
c) Glutamate
d) Alanine
3. Which of the following is a dipeptide?
a) Anserine
b) Glutathione
c) Glucagon
d) β -Lipoprotein
4. Which of the following is a tripeptide?
a) Anserine
b) Oxytocin
c) Glutathione
d) Kallidin
5. A peptide which acts as potent smooth
muscle hypotensive agent is
a) Glutathione
b) Bradykinin
c) Tryocidine
d) Gramicidin-s
6. A tripeptide functioning as an important
reducing agent in the tissues is
a) Bradykinin
b) Kallidin
c) Tyrocidin
d) Glutathione
7. An example of metalloprotein is
a) Casein
b) Ceruloplasmin
c) Gelatin
d) Salmine
8. Carbonic anhydrase is an example of
a) Lipoprotein
b) Phosphoprotein
c) Metalloprotein
d) Chromoprotein
9. An example of chromoprotein is
a) Hemoglobin
b) Sturine
c) Nuclein
d) Gliadin
10. An example of scleroprotein is
a) Zein
b) Keratin
c) Glutenin
d) Ovoglobulin