Q.No. 45 A batch reactor is inoculated with 1 g/L biomass. Under these conditions, cells exhibit a lag phase of 30 min. If the specific growth rate in the log […]
Category: GATE Biotechnology Previous Year Papers with Solutions
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GATE Biotechnology 2020 Previous Year Papers with Solutions
Intermediate Density DNA Proportion
Q.No. 44 E. coli was grown in 15N medium for several generations. Cells were then transferred to 14N medium, allowed to grow for 4 generations and DNA was isolated immediately. […]
GATE Biotechnology 2020 Previous Year Papers with Solutions
EcoRI Recognition Site GAATTC
Q.43 The sequence of a 1 Mb long DNA is random. This DNA has all four basesoccurring in equal proportion. The number of nucleotides, on average, between twosuccessive EcoRI recognition […]
![Q.42 Determine the correctness or otherwise of the following Assertion [a] and the Reason [r] Assertion [a]: A genetically engineered rice that produces beta-carotene in the rice grain is called Golden rice Reason [r]: Enabling biosynthesis of provitamin A in the rive endosperm gives a characteristic yellow orange color (A) Both [a] and [n] are false (B) Both [a] and [r] are true but is not the correct reason for [a] (C) Both [a] and are true and is the correct reason for [a] (D) [A] is true but [r] is false](https://www.letstalkacademy.com/wp-content/uploads/2026/01/slide_42-10.png)
GATE Biotechnology 2020 Previous Year Papers with Solutions
Golden Rice Beta-Carotene Production
Q.42 Determine the correctness or otherwise of the following Assertion [a] and the Reason [r]Assertion [a]: A genetically engineered rice that produces beta–carotene in the rice grain is called Golden […]
![Q.41 Which of the following statements about gene therapy are CORRECT? [P] Affected individuals, but not their progeny, can be cured through germline gene theraphy [Q] Affected individuals, as well as their progeny, can be cured through germline gene therapy [R] Affected individuals, but not their progeny, can be cured through somatic gene theraphy [S] Affected individuals, as well as their progeny, can be cure through somatic gene therapy (A) P and R only (B) P and S only (C) Q and R only (D) Q and S only](https://www.letstalkacademy.com/wp-content/uploads/2026/01/slide_41-10.png)
GATE Biotechnology 2020 Previous Year Papers with Solutions
Gene Therapy Somatic vs Germline
Q.41 Which of the following statements about gene therapy are CORRECT?[P] Affected individuals, but not their progeny, can be cured through germline gene theraphy[Q] Affected individuals, as well as their […]
![Q.40 Determine the correctness or otherwise of the following Assertion [a] and the Reason [r] Assertion [a]: A typule and its immediate descendant cells are specialized and are called toipotent Reason [C]: Totipotent cells retain the capacity to differentiate into only a few cell types (A) Both [a] and [r] are false (B) Both [a] and [r] are true but [r] is not the correct reason for [a] (C) Both [a] and [r] are true and [r] is the correct reason for [a] (D) [a] is true but is false](https://www.letstalkacademy.com/wp-content/uploads/2026/01/slide_40-10.png)
GATE Biotechnology 2020 Previous Year Papers with Solutions
Totipotent Cells Assertion Reason
Q.40 Determine the correctness or otherwise of the following Assertion [a] and the Reason [r] Assertion [a]: A typule and its immediate descendant cells are specialized and are called toipotent […]
![Q.39 Which of the following strategies are used by cells for metabolic regulation! [P] Phosphorylation- dephosphorylation [Q] Allostery [R| Feedback inhibition (A) P and Q only (B) P and R only (C) Q and R only (D) P, Q and R](https://www.letstalkacademy.com/wp-content/uploads/2026/01/slide_39-10.png)
GATE Biotechnology 2020 Previous Year Papers with Solutions
Cells Metabolic Regulation Strategies
Q.39 Which of the following strategies are used by cells for metabolic regulation! [P] Phosphorylation- dephosphorylation [Q] Allostery [R| Feedback inhibition (A) P and Q only (B) P and R […]
![Q.No. 38 Match sub-cellular organelles listed in Group I with their features listed in Group II: Group I Group II P] Mitochondrion 1. Single-membrane enclosed Q] Chloroplast 2. Double-membrane enclosed R] Nucleus 3. Maternal inheritance S] Endoplasmic reticulum 4. Endosymbiotic origin Options: P-1, Q-4, R-2, S-3 P-2, Q-3, R-4, S-1 P-3, Q-4, R-2, S-1 P-3, Q-1, R-4, S-2](https://www.letstalkacademy.com/wp-content/uploads/2026/01/slide_38-10.png)
GATE Biotechnology 2020 Previous Year Papers with Solutions
Match Sub-cellular Organelles with Their Features
Q.No. 38 Match sub-cellular organelles listed in Group I with their features listed in Group II: Group I Group II P] Mitochondrion 1. Single-membrane enclosed Q] Chloroplast 2. Double-membrane enclosed […]
![Q.37 The schematic of a plasmid with a gap in one of the strands is shown below: Which of the following enzyme(s) is/are required to fill the gap and generate a covalently closed circular plasmid? [P] DNA ligase [Q] Alkaline phosphatase [R] DNA polymerase [S] Polynucletoide Kinase](https://www.letstalkacademy.com/wp-content/uploads/2026/01/slide_37-10.png)
GATE Biotechnology 2020 Previous Year Papers with Solutions
Enzymes Required to Fill Plasmid Gap
Q.37 The schematic of a plasmid with a gap in one of the strands is shown below:Which of the following enzyme(s) is/are required to fill the gap and generate acovalently […]
![Q.36 Determine the correctness or otherwise of the following Assertion (a) and the Reasonv[r]. Assertion [a]: Embryonic stem cells are suitable for developing knockout mice Reason [r]: Homologous recombination is more frequent in embryonic stem cells than that in somatic cells (A) Both [a] and [r] are false (B) Both [a] and [r] are true, and [r] is the correct reason for [a] (C) Both [a] and [r] are true, but [r] is not the correct reason for [a] (D) [a] is true, but [r] is false](https://www.letstalkacademy.com/wp-content/uploads/2026/01/slide_36-10.png)
GATE Biotechnology 2020 Previous Year Papers with Solutions
Embryonic Stem Cells for Knockout Mice
Q.36 Determine the correctness or otherwise of the following Assertion (a) and the Reasonv[r].Assertion [a]: Embryonic stem cells are suitable for developing knockout miceReason [r]: Homologous recombination is more frequent […]
