GATE Biotechnology Question Paper 2009 with Answers.
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GATE Biotechnology Question Paper 2009 with Answers
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A culture vessel in which physical, physicochemical and physiological conditions, as well as cell concentration, are kept constant is known as
(A) Cell concentrator
(C) Batch bioreactor
Virus resistant transgenic plants can be developed by the expression of
(A) Cowpea trypsin inhibitor
(B) Crystalline toxin protein
(C) Defective movement protein
(D) Snowdrop lectin
Determine the correctness or otherwise of the following Assertion (a) and Reason (r):
Assertion (a) : IPTG (isopropyithiogalactoside) is a gratuitous inducer of kic operon.
Reason (r) : IPTG is an efficient inducer, but not a substrate of lac operon.
(A) Both (a) and (r) are true and (r) is the correct reason for (a).
(B) Both (a) and (r) are true but (r) is not the correct reason for (a).
(C) (a) is true but (r) is false.
(D) (a) is false but (r) is true.
Which of the following statements are true about bioreactors?
P. Continuous bioreactors provide less degree of control and uniform product quality than batch bioreactors.
Q. Batch bioreactors are ideally suited for reaction with substrate inhibition.
R. Choice of a bioreactor is dictated by kinetic considerations.
S. Fed batch bioreactors are also called semibatch bioreactors.