Category: GATE Biotechnology Previous Year Papers with Solutions

Q.55 Match the items in Group I with Group II Group I                                      […]

Q.54 For their efficient translation, eubacterial mRNAs possess a Shine-Dalgarno sequence for its recognition by an anti-Shine-Dalgarno sequence (ASD) in the ribosomes. The correct statement is (A) ASD is present […]

Q.53 In an affine gap penalty model, if the gap opening penalty is -20, gap extension penalty is -4 and gap length is 8, the gap score is _________.   […]

Q.52 The percentage SIMILARITIES and IDENTITIES, respectively, between the two peptide sequences given below will be ______% and _____%. Peptide I : Ala-Ala-Arg-Arg-Gln-Trp-Leu-Thr-Phe-Thr-Lys-Ile-Met-Ser-Glu Peptide II: Ala-Ala-Arg-Glu-Gln-Tyr-Ile-Ser-Phe-Thr-Lys-Ile-Met-Arg-Asp (A) 80, 80 (B) […]

Q.51 In a mouse genome, the numbers of functional Vα, Jα, Vβ, Dβ, Jβ gene segments are 79, 38, 21, 2 and 11, respectively. The total number of possible combinations […]

Q.50 The pungency of mustard seeds is primarily due to secondary metabolites such as isothiocyanate and nitrile. The pungency is usually felt only when the seeds are crushed. This is […]

Q.49 Match the following plant sources with their secondary metabolites and medical uses. Source plant Secondary metabolites Medical use P. Belladonna 1. Menthol a. Cancer treatment Q. Foxglove 2. Atropine […]

Q.48 Match the following photoreceptors with their prosthetic groups and spectral specificity. Photoreceptor Moiety that absorbs light Absorption (nm) P. Phototropin 1. Chromobilin a. 400–500 Q. Cryptochrome 2. FAD b. […]

Q.47 Consider a population of 10,000 individuals, of which 2500 are homozygotes (PP) and 3000 are heterozygotes (Pp) genotype. The frequency of allele p in the population is _________ . […]

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 […]