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Q.76 The characteristic feature of deuterostomes is depicted by (A) coelom formed by the hollowing out of a previously solid cord of mesodermal cells (B) spiral and determinate cleavage (C) […]

Q.75 The minimal inhibitory concentration (MIC) of an antibiotic X against Clostridium tetani, Staphylococcus sp., Shigella sp., and Streptococcus sp. is 𝟐𝟓, 𝟏𝟓, 𝟐 and 𝟏𝝁 𝐠/𝐦𝐥, respectively. Assuming that […]

Q.74 Assume that a bacterial culture has a mean generation time of 2 hours. If the number of bacteria present after 24 hours of culture are 𝟒. 𝟏 × 𝟏𝟎𝟕 […]

Q.73 Assume that the average DNA content of a single microbial cell is 4 femtogram. A soil sample analyzed for its microbial community DNA is found to contain 𝟎. 𝟑𝟐𝝁 […]

Q.72 The transformation efficiency of competent cells prepared in a laboratory is 𝟏𝟎4 𝐂𝐅𝐔/𝝁𝐠 of plasmid DNA. If 𝟎. 𝟎𝟏𝝁 𝐠 of this plasmid is used to transform these competent […]

Q.71 One-ml sample of a bacterial culture was serially diluted to 𝟏𝟎𝟓 times, and 46 colonies were obtained after plating this diluted sample on an agar medium. The number of […]

Q.70 Match the terms given in Group I with the descriptions from Group II. Group I (P) Photoautotrophs (Q) Chemoautotrophs (R) Photoheterotrophs (S) Chemoheterotrophs Group II (I) Use inorganic chemical […]

Q.69 Match the enzymes given in Group I with the events from Group II. Group I (P) UvrABC endonuclease (Q) Reverse transcriptase (R) AP endonuclease (S) ATP sulfurylase Group II […]

Q.68 Match the diseases given in Group I with their causative agents from Group II. Group I (P) Plague (Q) Rabies (R) Q fever (S) Malaria Group II (I) Coxiella […]

Q.67 A bactericidal agent X is added after 3 hours of growth of a bacterial culture. Following the addition of X, the bacterial growth was measured using the standard plate […]