Biochemistry Examples Enzymatic Actions Online Exam Quiz
Biochemistry Examples Enzymatic Actions GK Quiz. Question and Answers related to Biochemistry Examples Enzymatic Actions. MCQ (Multiple Choice Questions with answers about Biochemistry Examples Enzymatic Actions
By what factor chymotrypsin enhances the rate of peptide bond hydrolysis?
Options
A : 107
B : 108
C : At least 109
D : 106
Which of the following catalyzes the reversible reaction of ?-D-Glucose to glucose 6-phosphate?
Options
A : Chymotrypsin
B : Hexokinase
C : Enolase
D : Trypsin
Which of the following catalyzes the reversible degradation of 2-phosphoglycerate to phosphoenolpyruvate?
Options
A : Chymotrypsin
B : Hexokinase
C : Enolase
D : Trypsin
The polypeptide chains in chymotrypsin are linked by ___________
Options
A : Hydrogen bonds
B : Ionic bonds
C : Disulfide bond
D : SH-SH bond
Which of the following is false about chymotrypsin?
Options
A : Hydrolytic cleavage of a peptide bond by chymotrypsin has two phases
B : It is activated in the presence of trypsin
C : It is synthesized in the thyroid gland
D : Polypeptide chains in chymotrypsin are linked by S-S bonds
Which of the following is false about lysozyme?
Options
A : It is an antibacterial agent found in tears and egg white
B : The substrate of lysozyme is peptidoglycan
C : Lysozyme cleaves (?1 ? 4) glycosidic C-O bonds between two types of sugar residue in the molecule NAM and NAG
D : It is a bisubstrate enzyme
The active site of chymotrypsin consists of a catalytic triad of which of the following amino acid residues?
Options
A : Serine, histidine and aspartate
B : Serine, histidine and glutamate
C : Threonine, histidine and aspartate
D : Methionine, histidine and aspartate
Which of the following statements are true about the reactions at the active center of chymotrypsin?
Options
A : The aspartate residue gives an electron to histidine
B : The aspartate residue gives a proton to histidine
C : The aspartate residue keeps the histidine in the correct direction
D : A proton moves from the aspartate to serine to histidine in the catalytic triad of chymotrypsin
Which of the following is true about the structure of hexokinase?
Options
A : U-shaped
B : T-shaped
C : E-shaped
D : G-shaped
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