GATE BT exam:gate PYQs & Answers — Page 4

Questions 31–40 of 650. Imported answers require independent review unless marked reviewed.

The mean of the following series is _____. (rounded off to three decimal places)

0.01, 0.02, 0.03, ⋯ ⋯ ⋯, 1

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You are characterizing a new enzyme isolated and purified in the laboratory. If the maximum velocity of the enzyme is 1800 μmoles L⁻¹ min⁻¹ and the total concentration of the enzyme in the reaction mixture is 1.5 μM, then the turnover number of the enzyme is _____ s⁻¹. (answer in integer)

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To determine the viable cell count of a bacterial culture, you have plated 50 μL of a 100-fold diluted sample of the culture on a nutrient agar plate and obtained 20 colonies after overnight incubation. The viable cell count of the culture is _____ CFU mL⁻¹. (answer in integer)

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Given below is the Gibbs free energy change (ΔG) in kilo Joules per electron equivalent (kJ e⁻eq⁻¹) at pH 7.0, of organic and inorganic half reactions.

Acetate synthesis:

ΔG=27.4 kJ e⁻eq⁻¹

Reduction reaction:

ΔG = -78.72 kJ e⁻eq⁻¹

The free energy change of acetate oxidation to CO₂, H₂O and HCO₃⁻ is _____ kJ e⁻eq⁻¹. (rounded off to two decimal places)

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You have purified an enzyme using a series of chromatographic methods. It was observed that a 10 μg mL⁻¹ of this purified enzyme converted 10 mM substrate per hour at 25°C and pH 7. Its specific activity is _____ IU μg⁻¹. (rounded off to three decimal places)

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In the open-loop process shown in the figure, the input

, the transfer function

and the output

are given in the Laplace domain in terms of the Laplace variable s. For this process, which of the following is true?

(where

, are the magnitude of the input, the characteristic time and the gain for the process, respectively)

Your answerChoose one option.

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Match the immunological terms in Column I with their function/description in the Column II

Column I: P. J gene; Q. Cyclosporin; R. Epitope; S. Hapten

Column II: 1. Suppresses immune system by blocking calcineurin; 2. Antibody binding site on a large molecule; 3. Small foreign molecule which elicits an immune response only when combined with a carrier molecule; 4. Contributes to antibody diversity

Your answerChoose one option.

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

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

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

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

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Match the genetic disorders in Column I to the corresponding underlying cause in Column II

Column I: P. Klinefelter Syndrome; Q. Turner syndrome; R. Bloom syndrome; S. Xeroderma pigmentosum

Column II: 1. X-chromosome insufficiency; 2. DNA helicase mutations; 3. Nucleotide excision repair defects; 4. Extra X chromosome(s) in a male

Your answerChoose one option.

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

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

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

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

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Match the biomolecules in Column I with their function given in Column II

Column I: P. Lectins; Q. P-glycoprotein; R. Digitoxigenin; S. Mannose 6-phosphate

Column II: 1. Acts as ATP dependent pump to efflux out small molecules; 2. Targets lysosomal enzymes to their destination; 3. Specific carbohydrate binding proteins; 4. Inhibits Na⁺-K⁺ pump

Your answerChoose one option.

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

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

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

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

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By elemental analysis of a biomass sample, it was found that the cells in the given sample are composed of (by weight) C=50%, H=8%, O=20%, N=10% and ash content=12%. Which of the following is the correct empirical formula of the ash-free cells, normalized with respect to Nitrogen?

Your answerChoose one option.

C₅.₈H₁₁.₂O₁.₇N

C₅.₀H₁₀.₂O₁.₁N

C₆.₈H₁₂O₂.₁N

C₄.₈H₉O₃.₁N

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GATE BT exam:gate PYQs

Question 31

Question 32

Question 33

Question 34

Question 35

Question 36

Question 37

Question 38

Question 39

Question 40