Biotechnology
GATE BT branch:bt PYQs
Build your understanding with focused practice from past exam papers.
Questions 161–170 of 650. Imported answers require independent review unless marked reviewed.
Question 31
Open questionBTMCQ1 markNeeds review
The six faces of a cube (die) are numbered as 1, 2, 3, 4, 5 and 6, and it is rolled once. An outcome is the observed number on the top face. If the probability of getting an odd number as an outcome is twice that of an even number, then the probability of getting a number less than 3 is ________.
Your answerChoose one option.
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Open questionBTMCQ1 markNeeds review
Let
be the vector that is perpendicular to the vectors
and
. If the length of the vector
is
, then
is ________.Your answerChoose one option.
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The degree of reduction (reductance) for oxalic acid (
) is ________.Log in to check the answer
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If the rate at which E. coli divides is 0.5 h
, then its doubling time is ________ h.Log in to check the answer
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The decimal reduction time of a microbe during sterilization at 120 °C with a first order thermal death rate constant of 1 min
will be ________ min (rounded off to 1 decimal place).Log in to check the answer
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Open questionBTMCQ2 marksNeeds review
Match the disease (Column I) with its biological vector (Column II).
Column I Column II
P. Chagas disease 1. Tsetse flies
Q. Trypanosomiasis 2. Mosquitoes
R. Leishmaniasis 3. Sandflies
S. Yellow Fever 4. Reduviid bugs
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Open questionBTMCQ2 marksNeeds review
Match the industrial enzyme (Column I) with its application (Column II).
Column I Column II
P. Lipase 1. Maltose syrup production
Q. Ficin 2. Oil degradation
R. Amylase 3. Oligosaccharide/monosaccharide production
S. Glucosidase 4. Meat tenderization
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Open questionBTMCQ2 marksNeeds review
Match the enzyme (Column I) with its corresponding function (Column II).
Column I Column II
P. Primase 1. RNA dependent RNA synthesis
Q. Reverse transcriptase 2. DNA dependent DNA synthesis
R. RNA Replicase 3. RNA dependent DNA synthesis
S. DNA Polymerase III 4. DNA dependent RNA synthesis
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Open questionBTMCQ2 marksNeeds review
Match the item (Column I) with its corresponding use (Column II).
Column I Column II
P. Glutamine 1. Detachment of adherent cells
Q. Trypsin 2. Selection of transfected mammalian cell lines
R. Hypoxanthine 3. Source of carbon and nitrogen in animal cell culture media
S. Neomycin 4. A component of medium for selection of hybrid in monoclonal antibody production
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Open questionBTMCQ2 marksNeeds review
Match the chemical (Column I) with its use (Column II).
Column I Column II
P. Diethylpyrocarbonate 1. Chelation of magnesium ion during DNA purification
Q. Cesium chloride 2. Prevention of RNA degradation in aqueous environment
R. Ethidium bromide 3. Separation of DNA by density gradient centrifugation
S. Ethylenediaminetetraacetic acid 4. Staining of RNA in agarose gel
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