Questions and answers for exam Preparation

MCQs

Total Questions : 65 | Page 4 of 7 pages

Question 31. Biphasic systems may be stabilized by the use of __________

deuterated water
sugar
co-factors
co-enzymes

Discuss Question

Answer: Option A. -> deuterated water
Answer: (a).deuterated water

Question 32. Which of the following is not an advantage of impregnated wet beads?

Protection of the contained enzyme
More facile recovery of the biocatalyst
Solvent polarity
Allowing efficient and continuous use of biphasic PBRs

Discuss Question

Answer: Option C. -> Solvent polarity
Answer: (c).Solvent polarity

Question 33. The apparent equilibrium constant (Kbiphasic) of this system may be defined as _____________

\(\frac{[B_{org}]}{[A_{org}]}\)
\(\frac{[B_w]}{[A_w]}\)
\(\frac{[B_t]}{[A_t]}\)
\(\frac{[B_{org}]}{[B_w]}\)

Discuss Question

Answer: Option C. -> \(\frac{[B_t]}{[A_t]}\)
Answer: (c).\(\frac{[B_t]}{[A_t]}\)

Question 34. S-shaped curve may be shifted to the left by immobilizing the enzyme within highly hydrophilic support.

True
False
May be True or False
Can't say

Discuss Question

Answer: Option A. -> True
Answer: (a).True

Question 35. Which of the following does not represent Kbiphasic?

\(\frac{[B_{org}]}{[A_{org}]}\)
\(\frac{[B_t]}{[A_t]}\)
\(K_w (\frac{1+αP_B}{1+αP_A})\)
\(K_w \frac{P_B}{P_A}\)

Discuss Question

Answer: Option A. -> \(\frac{[B_{org}]}{[A_{org}]}\)
Answer: (a).\(\frac{[B_{org}]}{[A_{org}]}\)

Question 36. Which of this is a disadvantage of aqueous 2 phase system?

The enzymes which enter the upper phase are gradually lost
The enzymes are largely retained in homogeneous solution
The enzymes are stabilized by the presence of the polymers in homogeneous solution
No diffusion limitations to mass transfer exist

Discuss Question

Answer: Option A. -> The enzymes which enter the upper phase are gradually lost
Answer: (a).The enzymes which enter the upper phase are gradually lost

Question 37. If proteases are supplied with high concentrations of soluble proteins, peptides or amino acids __________ are produced.