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Q.91.Visual signal transduction cascade is activated by rhodopsin and involves degradation rather than synthesis of which ONE of the following second messenger molecules? (A) cAMP (B) IP3 (C) cGMP (D) […]

Q.90.Transitional epithelia is found in which ONE of the following organs? (A) Liver (B) Lung (C) Brain (D) Urinary bladder Transitional epithelium lines the urinary bladder, enabling it to stretch […]

Q.89. Which ONE of the following is the precursor molecule for corticosteroids? (A) Androgen (B) Estrogen (C) Pregnenolone (D) Mineralocorticoids Pregnenolone serves as the key precursor for corticosteroids in steroidogenesis […]

Q.88. Which ONE of the following is NOT a site for in situ conservation? (A) Biosphere reserve (B) Wild life sanctuary (C) Zoological garden (D) Biodiversity hotspot In Situ Conservation: […]

Q.87. Which ONE of the following techniques can be used for detecting the subcellular localization of serotonin receptor in intact cells? (A) Immunoelectron microscopy (B) SDS-PAGE (C) Fluorescence in-situ hybridization […]

Q.86. Which ONE of following leucocytes is phagocytic and has clear cytoplasm? (A) Eosinophil (B) Monocyte (C) TH-lymphocyte (D) Basophil The correct answer is: Monocyte (Option B). Monocytes are phagocytic […]

Q.85. A continuous bacterial culture carried out in a chemostat is set to a flow rate of 𝟒𝟎𝐦𝐥/𝐡𝐫. The culture volume is equivalent to that of a cubical container having […]

Q.84. 𝐀𝟏𝟎𝟎𝝁𝐥 aliquot ( 𝟏𝟎−𝟒 dilution) of the bacterial culture plated on the nutrient agar gave 4 colonies. The bacterial stock concentration (in million cells /𝐦𝐥, rounded off to one […]

Q.83. A bacterial culture has a generation time of 34 minutes. The time taken (in minutes, rounded off to two decimal places) for the 𝐎𝐃𝟓𝟓𝟎 of this exponentially growing culture […]

Q.82. A bacterial culture containing 𝟑 × 𝟏𝟎𝟓 live cells was exposed to a newly developed sterilizing agent. After 30 minutes of exposure, 3 live cells remained in culture. The […]