GATE Biotechnology Question Paper 2014 with Answers.
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GATE Biotechnology Question Paper 2014
The most plausible explanation for a sudden increase of the respiratory quotient (RQ) of a microbial culture is that
(A) cells are dying
(B) yield of biomass is increasing
(C) the fermentation rate is increasing relative to respiration rate
(D) the maintenance rate is decreasing
Which of the following is employed for the repeated use of enzymes in bioprocesses?
Gram-positive bacteria are generally resistant to complement-mediated lysis because
(A) thick peptidoglycan layer prevents insertion of membrane attack complex into the inner membrane
(B) Gram-positive bacteria import the membrane attack complex and inactivate it
(C) membrane attack complex is degraded by the proteases produced by the Gram-positive bacteria
(D) Gram-positive bacteria cannot activate the complement pathway
Which of the following essential element(s) is/are required as major supplement to enhance the bioremediation of oil spills by the resident bacteria?
(B) Nitrogen and phosphorus