Q.46 Topological winding number of a 2.0 kb covalently closed circular DNA was found to be 191 with a writhing number of -4. Hence, its LINKING NUMBER and the NUMBER […]
Tag: GATE Biotechnology Previous Year Papers with Solutions
Tag: GATE Biotechnology Previous Year Papers with Solutions
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Population Genetics
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- January 18, 2026
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Q.45 In a relatively large but finite and closed population of sexually reproducing diploid organisms, the frequency of homozygous genotype PP changes from 0.40 to 0.50 and that of pp […]
Identification of Plasmid DNA Forms
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- January 18, 2026
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Q.44 The plasmid DNA was subjected to restriction digestion using the enzyme EcoRI and analysed on an agarose gel. Assuming digestion has worked (the enzyme was active), match the identity […]
Standard Free Energy Change
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- January 18, 2026
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Q.43 Triose phosphate isomerase converts dihydroxyacetone phosphate (DHAP) to glyceraldehyde-3-phosphate (G-3-P) in a reversible reaction. At 298 K and pH 7.0, the equilibrium mixture contains 40 mM DHAP and 4 […]
Cholera Toxin Increases cAMP Levels
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- January 18, 2026
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Q.42 Cholera toxin increases cAMP levels by (A) modifying Gi protein (B) modifying Gs protein (C) binding to adenylate cyclase (D) activating cAMP phosphodiesterase Cholera Toxin Increases cAMP Levels by […]
Maximum Specific Growth Rate (μm)
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- January 18, 2026
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Q.41 Consider a continuous culture provided with a sterile feed containing 10 mM glucose. The steady-state cell density and substrate concentration at three different dilution rates are given in the […]
Growth Rate of Anchorage-Dependent Cells
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- January 18, 2026
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Q.40 A T-flask is seeded with 105 anchorage-dependent cells. The available area of the T-flask is 25 cm2 and the volume of the medium is 25 ml. Assume that the […]
Graph of the Function F(x)
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- January 18, 2026
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Q.39 The graph of the function F(x) = x / (k1x2 + k2x + 1) for 0 < x < ∞ is Correct Answer: (A) Introduction In this problem, we […]
Sum 1/√n^1/2 Series Convergence
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- January 18, 2026
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Q.38 Which of the following statements is true for the series given below? […]
Derivative of y = x^x
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- January 18, 2026
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Q.37 If y = xx, then dy/dx is xx(x − 1) xx−1 xx(1 + log x) ex(1 + log x) Introduction Finding the derivative of y = xx is a […]


