1. In which of the following separation techniques the separation is based on the net charge of the molecule ?
A) Affinity chromatography
B) Ion exchange chromatography
C) Molecular exclusion chromatography
D) Isopyenic centrifugation
2. An example for triose is
A) Glucose B) Ribulose C) Xylulose D) Glyceraldehyde
3. The exoskeleton of insects (chitin) is
composed of
A) N-Acetyl glucosamine
B) N-Acetyl muramic acid
C) N-Acetyl galactosamine
D) Glucose-6-phosphate
4. Of the following, which amino acid is an
imino acid ?
A) Histidine B) Glutamic acid C) Proline D) Tyrosine
5. The proteolytic enzyme trypsin, hydrolyses
the peptide bonds in which
A) Amino group is contributed either by lysine or arginine
B) Carbonyl function is contributed either by lysine or arginine
C) Carbonyl function is contributed either by phenylalanine or tyrosine
D) Amino group is contributed either by phenylalanine or tyrosine
6. Which of the following is not an
antioxidant ?
A) Vit. C B) Vit. E C) Carotenes D) Vit. B6
7. Iodine number of fatty acids denotes its
A) Degree of unsaturation
B) Chain length
C) Molecular weight
D) Solubility in water
8. Cold Sterilization means perseveration of
food by
A) Sterilizing at – 179 C B) Radiation C) Sterilizing at 0C D) Lyophylization
9. In humans the basal metabolic rate accounts for about __________ percentage of the daily calorie expenditure.
A) 60 – 75 B) 40 – 55 C) 25 – 40 D) 80 – 90
10. The Respiratory Quotient (RQ) is the ratio
of
A) O2 consumed/CO2 eliminated
B) H2O
consumed/CO2 eliminated
C) CO2 eliminated/O2 consumed
D) CO2
eliminated/H2O consumed
11. Biological Value
of a protein is influenced by
A) Amino acid composition
B) Vitamin and mineral content
C) Preparation (cooking)
D) All the above
12. The absorption maxima max
of a compound is dependent on
A) Structure of the compound
B) pH of the solvent in which the compound
exist
C) The polarity of the solvent
D) All the above
13. The purpose of guard column in HPLC
systems is to
A) Protect the peristaltic pump
B) Protect the main column
C) Protect the injection port
D) Protect the detector
14. All free radicals have _________ in their
orbitals.
A) Paired valence electron
B) Unpaired valence electrons
C) No valence electron
D) None of the above
15. Of the following which is not an
artificial sweetener ?
A) Saccharin
B) Sodium cyclamate
C) Butylated hydroxyanisole
D) Acesulfame
Learn more: Food Technology MCQ - Biochemistry MCQ
Answers
1. B) Ion exchange chromatography (Chromatography MCQ)
2 .D) Glyceraldehyde
3. A) N-Acetyl glucosamine
4. C) Proline
5. B) Carbonyl function is contributed either by lysine or arginine
6. D) Vit. B6
7. A) Degree of unsaturation
8. B) Radiation
9. A) 60 – 75
10. C) CO2 eliminated/O2 consumed
11. D) All the above
12. D) All the above
13. B) Protect the main column
14. B) Unpaired valence electrons
15. C) Butylated hydroxyanisole
