Tag: GATE Life Science Previous Year Papers with Solutions

Q.87 Which one of the following is characteristic of deuterostomes? (A) Radially symmetric body (B) Bilaterally symmetric body (C) Presence of well-defined digestive system (D) Formation of anus from blastopore Deuterostomes […]

Q.86 Which one of the following is an example of eumetazoans? (A) Dictyostelium (B) Hydra (C) Sponges (D) Volvox Hydra is the only eumetazoan among the options, as it belongs to […]

Q.85 Match the pair of organisms in Group 1 with their characteristic interactions in Group 2 Group 1 P. Photoblepharon palpebratus and Vibrio fischeri Q. Pseudomonas and Bdellovibrio R. Aspergillus and […]

Q.84 An actively growing culture (20 ml) of E. coli (1 × 105 per ml) was mixed with a total of 100 T4 phage particles, grown further for 40 min and […]

Q.83 Based on their properties, match the “Genera” in Group 1 with those in Group 2 Group 1 P. Bacillus Q. Neisseria R. Rhizobium S. Caulobacter Group 2 1. Sarcina […]

Q.82 A new isolate of a facultative anaerobe utilizes either oxygen or pyruvate as terminal electron acceptor. This bacterium was grown either anaerobically with glucose as sole carbon source; or aerobically […]

Q.81 During replication of the E. coli chromosome, Okazaki fragments are produced from (A) only one of the strands of the circular genome (B) both the strands of the circular genome […]

Q.80 Match the names of investigators in Group 1 with their contributions in Group 2: Group 1 P. Joseph Lister Q. John Needham R. Elie Metchnikoff S. Lazaro Spallanzani Group 2 […]

Q.79 Which of the statements about Corynebacterium diphtheriae biology is NOT CORRECT? (A) All strains of C. diphtheriae are producers of diphtheria toxin (B) Diphtheria toxin production can be minimized by […]

Q.78 An actively growing culture of E. coli divides in about 20 min. Under laboratory conditions, time taken to replicate the entire genome of this bacterium would be about: (A) 20 […]