GATE Biotechnology Previous Year Papers with Solutions Archives - Page 60 of 104 - CSIR NET LIFE SCIENCE COACHING | NTA NET LIFE SCIENCE

Q.61 Yeast biomass (C6H10O3N) grown on glucose is described by the stoichiometric equation given below: C6H12O6 + 0.48 NH3 + 3 O2 → 0.48 C6H10O3N + 3.12 CO2 + 4.32 H2O The amount of glucose needed for the production of 50 g L−1 of yeast biomass in a batch reactor with a working volume of 1,00,000 L is ________ kg (rounded off to the nearest integer).

GATE Biotechnology 2019 Previous Year Papers with Solutions

Glucose Requirement for Yeast Biomass Production

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January 13, 2026
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Q.61 Yeast biomass (C6H10O3N) grown on glucose is described by the stoichiometric equation given below: C6H12O6 + 0.48 NH3 + 3 O2 → 0.48 C6H10O3N + 3.12 CO2 + 4.32 […]

Q.60 ∫-11 f(x) dx calculated using trapezoidal rule for the values given in the table is ________ (rounded off to 2 decimal places). x -1 -2/3 -1/3 0 1/3 2/3 1 f(x) 0.37 0.51 0.71 1.0 1.40 1.95 2.71

GATE Biotechnology 2019 Previous Year Papers with Solutions

Trapezoidal Rule Integration

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January 13, 2026
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Q.60 ∫-11 f(x) dx calculated using trapezoidal rule for the values given in the table is ________ (rounded off to 2 decimal places). x -1 -2/3 -1/3 0 1/3 2/3 […]

Q.59 A new game is being introduced in a casino. A player can lose Rs. 100, break even, win Rs. 100, or win Rs. 500. The probabilities (P(X)) of each of these outcomes (X) are given in the following table: X (in Rs.) -100 0 100 500 P(X) 0.25 0.5 0.2 0.05 The standard deviation (σ) for the casino payout is Rs. ________ (rounded off to the nearest integer).

GATE Biotechnology 2019 Previous Year Papers with Solutions

Standard Deviation of Casino Payout

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January 13, 2026
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Q.59 A new game is being introduced in a casino. A player can lose Rs. 100, break even, win Rs. 100, or win Rs. 500. The probabilities (P(X)) of each […]

Q.58 The molecular mass of a protein is 22 kDa. The size of the cDNA (excluding the untranslated regions) that codes for this protein is _______ kb (rounded off to 1 decimal place).

GATE Biotechnology 2019 Previous Year Papers with Solutions

Protein 22 kDa Molecular Mass to cDNA Size

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January 13, 2026
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Q.58 The molecular mass of a protein is 22 kDa. The size of the cDNA (excluding the untranslated regions) that codes for this protein is _______ kb (rounded off to […]

Q.57 In pea plants, purple color of flowers is determined by the dominant allele while white color is determined by the recessive allele. A genetic cross between two purple flower-bearing plants results in an offspring with white flowers. The probability that the third offspring from these parents will have purple flowers is _______ (rounded off to 2 decimal places).

GATE Biotechnology 2019 Previous Year Papers with Solutions

Pea Plants Purple White Flowers Genetic Cross

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January 13, 2026
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Q.57 In pea plants, purple color of flowers is determined by the dominant allele while white color is determined by the recessive allele. A genetic cross between two purple flower-bearing […]

Q.56 The difference in concentrations of an uncharged solute between two compartments is 1.6-fold. The energy required for active transport of the solute across the membrane separating the two compartments is _____ cal mol−1 (rounded off to the nearest integer). (R = 1.987 cal mol−1 K−1, T = 37 °C)

GATE Biotechnology 2019 Previous Year Papers with Solutions

Energy Required for Active Transport of Uncharged Solute

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January 13, 2026
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Q.56 The difference in concentrations of an uncharged solute between two compartments is 1.6-fold. The energy required for active transport of the solute across the membrane separating the two compartments […]

Q.55 A UV-visible spectrophotometer has a minimum detectable absorbance of 0.02. The minimum concentration of a protein sample that can be measured reliably in this instrument with a cuvette of 1 cm path length is _______ μM. The molar extinction coefficient of the protein is 10,000 L mol−1 cm−1.

GATE Biotechnology 2019 Previous Year Papers with Solutions

Minimum Protein Concentration

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January 13, 2026
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Q.55 A UV-visible spectrophotometer has a minimum detectable absorbance of 0.02. The minimum concentration of a protein sample that can be measured reliably in this instrument with a cuvette of […]

Q.54 Determine the correctness or otherwise of the following Assertion [a] and the Reason [r] Assertion [a]: It is possible to regenerate a whole plant from a single plant cell. Reason [r]: It is easier to introduce transgenes in to plants than animals. (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) Both [a] and [r] are false (D) [a] is true but [r] is false

GATE Biotechnology 2019 Previous Year Papers with Solutions

Plant Regeneration from Single Cell

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January 13, 2026
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Q.54 Determine the correctness or otherwise of the following Assertion [a] and the Reason [r]Assertion [a]: It is possible to regenerate a whole plant from a single plant cell.Reason [r]: […]

Q.53 Which of the following statements is ALWAYS CORRECT about an ideal chemostat? P. Substrate concentration inside the chemostat is equal to that in the exit stream Q. Optimal dilution rate is lower than critical dilution rate R. Biomass concentration increases with increase in dilution rate S. Cell recirculation facilitates operation beyond critical dilution rate (A) P and Q only (B) P, R and S only (C) P and S only (D) P, Q and S only

GATE Biotechnology 2019 Previous Year Papers with Solutions

Ideal Chemostat Characteristics

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January 13, 2026
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Q.53 Which of the following statements is ALWAYS CORRECT about an ideal chemostat?P. Substrate concentration inside the chemostat is equal to that in the exit streamQ. Optimal dilution rate is […]