Category: GATE Biotechnology Previous Year Papers with Solutions

Q.35 Genomic DNA isolated from a bacterium was digested with a restriction enzyme that recognizes a 6-base pair (bp) sequence. Assuming random distribution of bases, the average length (in bp) […]

Q.34 A single stem cell undergoes 10 asymmetric cell divisions. The number of stem cells at the end is ________ Single Stem Cell 10 Asymmetric Divisions: Stem Cell Count Explained […]

Q.33 The absorbance of a solution of tryptophan measured at 280 nm in a cuvette of 2.0 cm path length is 0.56 at pH 7. The molar extinction coefficient (ε) […]

Q.32 The variable z has a standard normal distribution. If P(0 ≤ z ≤ 1) = 0.34, then P(z2 > 1) is equal to (up to two decimal places) ________ […]

Q.31 The determinant of the matrix ( 4 -6 -3 2 ) is ________ Introduction Matrices are widely used in algebra, engineering, physics, and computer applications. One of the most […]

Q.30 Which one of the following plant secondary metabolites is a natural insecticide?(A) Digitoxin (B) Pyrethrin (C) Salicylic acid (D) Avenacin A-1 Pyrethrin is the plant secondary metabolite that acts […]

Q.29 Which one of the following is the solution for cos²x + 2cosx + 1 = 0, for values of x in the range of 0° < x < 360°? […]

Q.28 Identify the character based method(s) used for the construction of a phylogenetic tree.P. Maximum parsimonyQ. Neighbor joiningR. Maximum likelihoodS. Bootstrapping(A) Q only (B) P and R only(C) Q and […]

Q.27 Which one of the following techniques is used to monitor RNA transcripts, both temporallyand spatially?(A) Northern blotting(B) In situ hybridization(C) Southern blotting(D) Western blotting Answer: (B) In situ hybridization […]

Q.26 Standard error is(A) the probability of a type I error in a statistical test(B) the error in estimating a sample standard deviation(C) the standard deviation of a variable that […]