Q.39 Which one of the following enzymes converts testosterone to estradiol?(A) Aromatase(B) 3β-hydroxysteroid dehydrogenase(C) 5α-reductase(D) 17β-hydroxysteroid dehydrogenase Aromatase is the enzyme that converts testosterone to estradiol through aromatization. This multiple-choice […]
Q.38 Which of the following statements about endogenous synthesis of insulin arecorrect?P. Insulin is synthesized as preproinsulin.Q. Preproinsulin is converted to proinsulin.R. Single-site cleavage of proinsulin eliminates C chain.S. Mature […]
Q.37 Two RNAs shown below were used separately as templates in an in vitrotranslation system, which can generate proteins in all possible reading frames. RNA1: 5′ − (AG)n − 3′ […]
Q.36 Filamentous photosynthetic algae were placed on a microscopic slide andilluminated with light of different colors as illustrated.The bacteria that are known to migrate towards the region of high 𝑂ଶ […]
Q.35 The absorbance of a 5 × 10−4 M solution of tyrosine at 280 nm wavelength is 0.75. The path length of the cuvette is 1 cm. The molar absorption […]
Q.34 The number of ATP molecules required for the complete assimilation of onemolecule of CO2 in Calvin cycle is _____. The number of ATP molecules required for complete assimilation of […]
Q.33 The 𝑝𝐾a values of the carboxylic and amino groups of an amino acid with anon-ionizable side chain are 2.17 and 9.13 , respectively. The isoelectric point(rounded off to two places […]
Q.32 A dye was allowed to undergo migration on a chromatographic paper using asolvent. The dye, and the solvent-front migrated 5 and 20 𝑐𝑚 , respectively, fromthe point of origin. […]
Q.31 Which one of the following compounds is NOT a translation inhibitor?(A) Chloramphenicol(B) Cycloheximide(C) Puromycin(D) Rifampicin Rifampicin is not a translation inhibitor; it targets bacterial RNA polymerase to block transcription. Chloramphenicol, […]
Q.30 Which one of the following statements about the DNA polymerase III of E. coli isNOT correct?(A) It catalyzes nick translation.(B) Its absence is lethal to E. coli.(C) It synthesizes […]
