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Total Questions : 56 | Page 2 of 6 pages
Question 11. 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 _______________
  1.    protease
  2.    lipase
  3.    lysozyme
  4.    cellulase
 Discuss Question
Answer: Option C. -> lysozyme
Answer: (c).lysozyme
Question 12. Pick odd one out.
  1.    Triton-X-100
  2.    Cetyl triethyl ammonium bromide
  3.    Sodium lauryl sulphate (SLS)
  4.    Cetyl trimethyl ammonium bromide
 Discuss Question
Answer: Option A. -> Triton-X-100
Answer: (a).Triton-X-100
Question 13. ___________ is a divalent chelator which can be used to extract enzymes from different sources.
  1.    Sucrose
  2.    NaOH
  3.    Lysozyme
  4.    EDTA
 Discuss Question
Answer: Option D. -> EDTA
Answer: (d).EDTA
Question 14. The phenomenon wherein the osmotic pressure created due to presence of solutes inside and outside the cells will be equal is referred to as ________
  1.    isotonic condition
  2.    hypertonic condition
  3.    hypotonic condition
  4.    osmotic shock
 Discuss Question
Answer: Option A. -> isotonic condition
Answer: (a).isotonic condition
Question 15. Which one of the following is not an example for ionic-detergent?
  1.    Sodium dodecyl sulphate (SDS)
  2.    Tween
  3.    Sodium lauryl sulphate (SLS)
  4.    Cetyl trimethyl ammonium bromide
 Discuss Question
Answer: Option B. -> Tween
Answer: (b).Tween
Question 16. Which chemical is used for extracting enzymes by osmotic shock treatment?
  1.    EDTA
  2.    NaoH
  3.    SDS
  4.    1.4% buffered sucrose
 Discuss Question
Answer: Option D. -> 1.4% buffered sucrose
Answer: (d).1.4% buffered sucrose
Question 17. Homogenization cannot be done by using which one of the following?
  1.    Homogenizer
  2.    Mortar and pestle
  3.    French press
  4.    Ultrasonicator
 Discuss Question
Answer: Option D. -> Ultrasonicator
Answer: (d).Ultrasonicator
Question 18. Which of the following is not a physical method for extraction of enzymes?
  1.    Osmotic shock
  2.    Ultrasonication
  3.    Homogenization
  4.    Freezing technique
 Discuss Question
Answer: Option A. -> Osmotic shock
Answer: (a).Osmotic shock
Question 19. ____________ is a phenomenon of assuming frequencies more than 20 kHz which is above the human audibility.
  1.    Homogenization
  2.    Ultrasonics
  3.    Alkali treatment
  4.    Freezing
 Discuss Question
Answer: Option B. -> Ultrasonics
Answer: (b).Ultrasonics
Question 20. The procedure in which cell lysis occur because of shock waves which are formed due to collapses occurring in buffered solution containing cells is referred to as _______________
  1.    alkali treatment
  2.    osmotic shock
  3.    ultrasonication
  4.    detergent treatment
 Discuss Question
Answer: Option C. -> ultrasonication
Answer: (c).ultrasonication

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