Category: GATE Biotechnology Previous Year Papers with Solutions

Q.50 A 0.1 mL aliquot of a bacteriophage stock having a concentration of 4 × 109 phages mL−1 is added to 0.5 mL of E. coli culture having a concentration […]

Q.49 In a Mendel’s dihybrid experiment, a homozygous pea plant with round yellow seeds was crossed with a homozygous plant with wrinkled green seeds. F1 intercross produced 560 F2 progeny. […]

Q.48 Which of the following nucleus/nuclei is/are NMR active? (A) 1H (B) 13C (C) 16O (D) 32S Which Nuclei Are NMR Active? 1H, 13C, 16O, and 32S Explained Nuclei are […]

Q.47 Which of the following chemical messenger(s) is/are derivative(s) of tryptophan? (A) γ-amino butyric acid (B) Indole acetic acid (C) Melatonin (D) Serotonin Tryptophan serves as a precursor for key […]

Q.46 Which of the following antimicrobial agent(s) is/are growth factor analog(s)? (A) 5-Fluorouracil (B) Isoniazid (C) Sulfanilamide (D) Tetracycline Sulfanilamide is the primary growth factor analog among the options, mimicking […]

Q.45 Which of the following statement(s) is/are CORRECT about Agrobacterium tumefaciens? (A) It contains tumor inducing plasmid (B) It causes crown gall disease in dicotyledonous plants (C) It is a […]

Q.44 Tertiary structure of a protein consisting of α-helices and β-strands can be determined by (A) circular dichroism spectroscopy (B) mass spectrometry (C) nuclear magnetic resonance spectroscopy (D) UV spectroscopy […]

Q.43 In Neurospora crassa, a mutation in the poky gene results in a slow growth phenotype (poky). The results of four crosses are given below. (1) wild-type ♀ × wild-type […]

Q.42 Which one of the following tools is used to compare all the possible six-open reading frames of a given nucleotide query sequence with all the available six-open reading frames […]

Q.41 Which of the following combinations of plant hormones and their associated function are CORRECT? Hormone                              […]