Enzyme Engineering in Biotechnology MCQs | Page - 4

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Mr. Dubey • 100.64K Points
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Q. Enzymes that catalyze the transfer of atom or group between two molecules is known as . . . . . . . .

  • (A) Oxidoreductases
  • (B) Transferases
  • (C) Ligases
  • (D) Isomerases
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Mr. Dubey • 100.64K Points
Coach

Q. In . . . . . . . . treatment, certain molecules interact through ionic or Vander wall forces which leads to solubilization of phospholipids and lipoprotein which in turn, increases membrane permeability directing to cell lysis.

  • (A) Lysozyme
  • (B) EDTA
  • (C) Detergent
  • (D) NaoH
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M

Mr. Dubey • 100.64K Points
Coach

Q. Which of the following is an RNA dependent DNA synthetase

  • (A) DNA polymerase I
  • (B) DNA polymerase II
  • (C) Reverse transcriptase
  • (D) All of these
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Mr. Dubey • 100.64K Points
Coach

Q. The pH at which the net charge on the enzyme molecule is zero is called . . . . . . . .

  • (A) pKa
  • (B) Half-life
  • (C) Isoelectric point
  • (D) Km
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M

Mr. Dubey • 100.64K Points
Coach

Q. The technique in which the cells are subjected to cold temperature of about -15° C to -25° C is referred to as . . . . . . . .

  • (A) Ultrasonics
  • (B) Freezing
  • (C) Homogenization
  • (D) Osmotic shock
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Mr. Dubey • 100.64K Points
Coach

Q. Which of the following is an advantage of enzymes over chemical catalysts?

  • (A) High productivity, less material cost
  • (B) High cost of enzyme isolation
  • (C) High cost of enzyme purification
  • (D) Unstable nature of enzymes
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Mr. Dubey • 100.64K Points
Coach

Q. What happens to Vmax and Km in case of uncompetitive inhibition when I = Ki'?

  • (A) Lowers to 0.5 Vmax and 0.5 Km
  • (B) Vmax is unchanged and Km increases 2Km
  • (C) Lowers to 0.5 Vmax and Km remains unchanged
  • (D) Lowers to 0.67 Vmax and Km increases to 2Km
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Mr. Dubey • 100.64K Points
Coach

Q. Trypsin exhibits which kind of specificity?

  • (A) Absolute specificity
  • (B) Group specificity
  • (C) Stereospecificity
  • (D) Regiospecificity
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Mr. Dubey • 100.64K Points
Coach

Q. Loss of activity which may be restored by the removal of inhibitor is referred to as . . . . . . . .

  • (A) Reversible inhibition
  • (B) Irreversible inhibition
  • (C) Competitive inhibition
  • (D) Mixed inhibition
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Mr. Dubey • 100.64K Points
Coach

Q. The enzyme which specifically catalyzes β (1 → 4) glycosidic linkages of NAM (N-acetyl muramic acid) and NAG (N-acetyl glucosamine) present in bacterial peptidoglycan is . . . . . . . .

  • (A) Protease
  • (B) Lipase
  • (C) Lysozyme
  • (D) Cellulase
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