GATE BT Microbes PYQs & Answers — Page 2

Questions 11–18 of 18. Imported answers require independent review unless marked reviewed.

Topic practice 18 questionsPage 2 of 2

Match enzymes in Group I with their corresponding industrial application in Group II.

Group I P. Amylase Q. Invertase R. Pectinase S. Xylanase

Group II

Laundry detergent

Fruit juice clarification

Liquefaction of sucrose

Pulp and paper processing

Your answerChoose one option.

P-2, Q-3, R-4, S-1

P-1, Q-3, R-2, S-4

P-1, Q-2, R-3, S-4

P-1, Q-4, R-2, S-3

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Which of the following statement(s) is/are CORRECT about Agrobacterium tumefaciens?

Your answerSelect all correct options. You can choose more than one.

It contains tumor inducing plasmid

It causes crown gall disease in dicotyledonous plants

It is a Gram-positive soil bacterium

It is used in generating transgenic plants

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Tetracycline inhibits the

Your answerChoose one option.

interaction between tRNA and mRNA

translocation of mRNA through ribosome

peptidyl transferase activity

binding of amino-acyl tRNA to ribosome

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Match the industrial products mentioned in Group I with their producer organisms in Group II

Group I P. Citric acid Q. Cellulase R. Vitamin B₁₂ S. Butanol

Group II

Trichoderma viride

Clostridium acetobutylicum

Aspergillus niger

Propionibacterium freudenreichii

Your answerChoose one option.

P-4, Q-3, R-1, S-2

P-3, Q-1, R-2, S-4

P-2, Q-1, R-4, S-3

P-3, Q-1, R-4, S-2

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Yeast converts glucose to ethanol and carbon dioxide by glycolysis as per the following reaction:

Assuming complete conversion, the amount of ethanol produced (in g) from 200 g of glucose is (up to two decimal places)

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Which one of the following organisms is responsible for crown gall disease in plants?

Your answerChoose one option.

Xanthomonas campestris

Rhizobium etli

Agrobacterium tumefaciens

Erwinia stewartii

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For an E. coli culture in the exponential phase of growth, optical density (OD) at 540 nm is 0.3 at 2 hours and 0.6 at 4 hours. Assuming that the measured OD is linearly proportional to the number of E. coli cells, the growth rate (per hour) for this culture is ________.

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During anaerobic growth, an organism converts glucose (P) into biomass (Q), ethanol (R), acetaldehyde (S), and glycerol (T). Every mole of carbon present in glucose gets distributed among the products as follows:

1 (C-mole P)

0.14 (C-mole Q) + 0.25 (C-mole R) + 0.3 (C-mole S) + 0.31 (C-mole T)

From 1800 grams of glucose fed to the organism, the ethanol produced (in grams) is ________. Given data: Atomic weights (Da) of C = 12, H = 1, O = 16, and N = 14

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GATE BT Microbes PYQs

Question 27

Question 35

Question 3

Question 39

Question 49

Question 36

Question 39

Question 54