Category: GATE Biotechnology Previous Year Papers with Solutions

Q.45 The equilibrium potential of a biological membrane for Na+ is 55 mV at 37 °C. Concentration of Na+ inside the cell is 20 mM. Assuming the membrane is permeable to […]

Q.44 A crossing was performed between the genotypes DdEeFfgg and ddEeFfGg. Assuming that theallelic pairs of all genes assort independently, the proportion of progeny having the genotypeddeeffgg is expected to […]

Q.43 Match the type of chromosomal inheritance (Column-I) with the corresponding genetic disease ortrait (Column-II).              Column-I                  […]

Q.42 A variety of genetic elements are used in the transgenic plant research. Match the genetic elements(Column-I) with their corresponding source (Column-II).          Column-I        […]

Q.41 Match the secondary metabolites (Column-I) with the corresponding plant species (Column-II).Column-I                                  Column-IIP. Morphine  […]

Q.40 Select the CORRECT combination of genetic components that are essential for the transfer of T-DNA segment from Agrobacterium tumefaciens to plant cells.(A) Border repeat sequences and oncogenes (B) Border […]

Q.39 Which of the following events occur during the stationary phase of bacterial growth?P. Rise in cell number stopsQ. Spore formation in some Gram-positive bacteria such as Bacillus subtilisR. Cell […]

Q.38 A DNA sequence, 5’-ATGGACGTGCTTCCCAAAGCATCGGGC-3’, is mutated to obtain P. 5’-ATGGACGTGCTTCaCAAAGCATCGGGC-3’ Q. 5’-ATGGACGTGCTTCCCgAAAGCATCGGGC-3’ R. 5’-ATGGACGTGCTTCC-AAAGCATCGGGC-3’ S. 5’-ATGGACGTGCTTCCCAAtGCATCGGGC-3’ T. 5’-ATGGACGaGCTTCCCAAAGCATCGGGC-3’ [Point mutations are shown in the lower case or ‘-’ within […]

Q.37 Which set of the following events occurs during the elongation step of translation? P. Attachment of mRNA with the smaller subunit of ribosome Q. Loading of correct aminoacyl-tRNA into […]

Q.36 Which combination of the following statements is CORRECT for cyanobacteria? P. They can perform oxygenic photosynthesis Q. Usually filamentous forms are involved in nitrogen fixation R. Nitrogen fixation occurs […]