GATE 2023 BT – Previous Year Questions with Solutions
All 65 questions of GATE 2023 BT with answers and explanations. Read each question, then practise it by topic or as a full paper.
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- Question 1 – "You are delaying the completion of the task. Send contributions at the earliest."
- Question 2 – References : : : Guidelines : Implement (By word meaning)
- Question 3 – In the given figure, PQRS is a parallelogram with PS = 7 cm, PT = 4 cm and PV = 5 cm. What is the length of RS in cm? (The diagram is representative.)
- Question 4 – In 2022, June Huh was awarded the Fields medal, which is the highest prize in Mathematics. When he was younger, he was also a poet. He did not win any…
- Question 5 – A line of symmetry is defined as a line that divides a figure into two parts in a way such that each part is a mirror image of the other part about…
- Question 6 – Human beings are one among many creatures that inhabit an imagined world. In this imagined world, some creatures are cruel. If in this imagined world,…
- Question 7 – To construct a wall, sand and cement are mixed in the ratio of 3:1. The cost of sand and that of cement are in the ratio of 1:2. If the total cost of…
- Question 8 – The World Bank has declared that it does not plan to offer new financing to Sri Lanka, which is battling its worst economic crisis in decades, until…
- Question 9 – The coefficient of x4 in the polynomial (x-1)3(x-2)3 is equal to .
- Question 10 – Which one of the following shapes can be used to tile (completely cover by repeating) a flat plane, extending to infinity in all directions, without…
- Question 11 – Eukaryotic transcription is carried out by
- Question 12 – Acetylcholine released by the parasympathetic nerves has which one of the following functions in the heart pacemaker cells?
- Question 13 – Determine the correctness or otherwise of the following Assertion [a] and the Reason [r]. Assertion [a]: In multicellular organisms, cells of…
- Question 14 – Determine the correctness or otherwise of the following Assertion [a] and the Reason [r]. Assertion [a]: Chromosome mutations can change the structure…
- Question 15 – C-value paradox refers to
- Question 16 – Which one of the following drugs is NOT an immune checkpoint inhibitor?
- Question 17 – Dendritic cells are involved in cross-presentation of antigens. Which of the following protein(s) is(are) required for cross-presentation? P. Basic…
- Question 18 – Which one of the following is required for the development of B-cells in the bone marrow?
- Question 19 – Which one of the following statements is TRUE about leghemoglobin?
- Question 20 – The correct sequence of events during bacteriophage infection of a bacterial cell is
- Question 21 – Intracellular proteins are targeted for proteolytic degradation in proteasomes upon conjugation with
- Question 22 – In ELISA, which of the following enzymes are conjugated to antibodies for detection of the analyte? P. Alkaline phosphatase Q. Trypsinase R.…
- Question 23 – In hybridoma technology, which one of the following enzymes is absent in the myeloma cells that are used for monoclonal antibody production?
- Question 24 – Which of the following methods are used for detection of DNA and RNA, respectively?
- Question 25 – Match the types of RNA in Group I with their corresponding function in Group II. Group I Group II --- --- P. mRNA 1. Serves as adaptors between mRNA…
- Question 26 – Which one of the following programs is used for finding distantly related (or remote) protein homologs?
- Question 27 – Which one of the following is used for global alignment of two protein sequences?
- Question 28 – Which one of the following methods CANNOT be used to determine the secondary structure content of a protein?
- Question 29 – Which one of the following plant growth regulators facilitate adventitious root formation?
- Question 30 – Fabry disease in humans is a X-linked disease. The probability (in percentage) for a phenotypically normal father and a carrier mother to have a son…
- Question 31 – The value of x0(2x-4x)/x2 is .
- Question 32 – A series (S) is given as S = 1 + 3 + 5 + 7 + 9 + ...... The sum of the first 50 terms of S is .
- Question 33 – Two fair six-sided dice are thrown. The probability of getting 12 as the product of the numbers on the dice (rounded off to two decimal places) is .
- Question 34 – If 73x=216, the value of 7-x (rounded off to three decimal places) is .
- Question 35 – The distance between the two points of intersection of x2+y=7 and x+y=7 (rounded off to two decimal places) is .
- Question 36 – Match the immune tolerance mechanisms in Group I with their respective outcomes in Group II. Group I Group II --- --- P. Anergy 1. Elimination of…
- Question 37 – Match the type of bacteria in Group I with their respective growth properties in Group II. Group I Group II --- --- P. Halophile 1. Grows optimally…
- Question 38 – Match the virus in Group I with the type of genome it contains in Group II. Group I Group II --- --- P. T4 bacteriophage 1. dsRNA Q. SARS-CoV-2 2.…
- Question 39 – The event(s) that lead(s) to inactivation of tumor suppressor genes in cancer cells is(are)
- Question 40 – Methylation of CpG islands near the promoter of a gene can inhibit transcription by
- Question 41 – Which of the following statement(s) is(are) TRUE about induced pluripotent stem cells?
- Question 42 – Which of the following statement(s) is(are) TRUE about fluoroquinolone drugs?
- Question 43 – Which of the following is(are) plant protoplast fusogenic agent(s)?
- Question 44 – Direct DNA transfer method(s) used for plant genetic engineering is(are)
- Question 45 – Which of the following vector(s) is(are) used to clone a DNA fragment of size 220 kb?
- Question 46 – The following reaction represents biomass synthesis from hexadecane: C 16H 34+12.5O 2+2.13NH 310.6CH 1.66O 0.27N 0.27+5.37CO 2+11.4H 2O. The value of…
- Question 47 – Temperature of a reaction with activation energy 15\ kcal\ mol-1 is increased from 300 K to 310 K. With R=1.9872\ cal\ mol-1K-1, the ratio k 310/k 300…
- Question 48 – E. coli is cultivated in a chemostat at dilution rate 0.2\ h-1. Biomass yield due to oxygen consumption is 0.2\ g/g and steady biomass concentration…
- Question 49 – Aqueous two-phase extraction is used to recover α-amylase from a solution. A polypropylene glycol-dextran mixture is added and the solution separates…
- Question 50 – E. coli cultivated at 298 K uptakes an uncharged compound A by passive diffusion. Intracellular and extracellular concentrations are 0.001 M and 0.1…
- Question 51 – If there are three unrooted trees for four protein sequences, the number of rooted trees for the same number of sequences is .
- Question 52 – The number of different possible ways of forming five intramolecular disulfide bonds with ten cysteine residues of a protein is .
- Question 53 – The schematic shows a chemostat with cell recycle. F 0,F r are feed and recycle flow rates, and X 1,X 0,X are reactor, recycle and product cell…
- Question 54 – An enzyme catalyzes A B with k cat=500\ s-1. If V 0=10\ M/s, total enzyme concentration is 30 nM and [A]=40\ M, the value of K m (μM) is .
- Question 55 – DNA sample collected from an unidentified bacterial species (Y) contains 13% of adenine. The G+C content (in percentage) of Y is .
- Question 56 – If 1000 bp of double-helical DNA weighs 110-18 g and the distance between two bp is 0.34 nm, the DNA mass (mg, one decimal place) required to stretch…
- Question 57 – A protein has three identical sites at the vertices of an equilateral triangle. One donor has quantum yield D=0.5. Adding one acceptor reduces it to…
- Question 58 – If A=pmatrix1&2\\3&5pmatrix, the value of A4+3A2-5A+6I is .
- Question 59 – If f(x)=( x+ x)/( x- x), the value of f(x) at x=0 is .
- Question 60 – If f(2)=5 and f(x)f(x+1)=3 for all real x, the value of f(10) is .
- Question 61 – Ten playing cards numbered 1, 2, 3, ...., 10 are placed face down on a table. One card is drawn at random, its number recorded, and then replaced face…
- Question 62 – A dilatant fluid has consistency index K=0.415 (CGS) and flow index n=1.23. Its apparent viscosity (g\ cm-1s-1) at shear rate 60\ s-1, rounded to the…
- Question 63 – An evaporator has 0.15 m glass-wool insulation, inner and outer temperatures 700°C and 80°C, mean conductivity 0.29\ W\ m-1K-1 and wall area 1.2\ m2.…
- Question 64 – A proportional controller is used to control the temperature of an autoclave from 60 C ° to 130 C ° . If the proportional band setting of the…
- Question 65 – A dNTP master mix combines 40 μL of each 20 mM dATP, dCTP, dGTP and dTTP stock. 4 μL of this mix is added to a PCR mix of final volume 50 μL. The…