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43. Bacterial conjugation (A) occurs through the uptake of free DNA from environment (B) requires direct contact between two bacterial cells through pilus (C) involves the transfer of genetic material […]

42. N and N0 represent the number of viable cells at time ‘t’ during sterilization and at the start of sterilization (t=0), respectively. Assuming that cell death follows first order […]

41. Choose the option that shows the correct pairing of the products with their corresponding microorganisms. P.Citric acid                          […]

40. Choose the option that shows the correct pairing of the diseases with their corresponding causative organisms. P. Chagas disease            i. Trypanosoma gambiense Q. Sleeping […]

39. The specific productivity (qp) of cellulase production by Aspergillus niger follows a linear relationship with the specific growth rate (µ) and is of the form qp = αµ + […]

38. A culture of 106 bacteria, with doubling time of 60 min, is grown in a nutrient medium at 37°C. Considering that the nutrients are unlimited, the number of bacteria […]

37. Match the entries in Group I with the entries in Group II Group I                         Group II Bacteria    […]

36. The population of a bacterial culture increases from one thousand to one billion in five hours. The doubling time of the culture (correct to 1 decimal place) is        […]

35. Bacterial plasmid genes of non-chromosomal origin are associated with A) providing resistance against antibacterial agents B) the degradation of toxic materials C) the production of certain toxins D) the transfer […]

34. Match the entries in Group I with that in Group II  Group I Group II P) Phytase 1) Paper and pulp processing Q) Xylanase 2) Delignification R) Laccase 3) […]