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Q.38 Identify the correct pairs:(i) Thermophile                      (a) grows optimal at 37 °C(ii) Mesophile                […]

Q.37 Match the bacterial structure to function(i) Cell wall                             (a) Virulence factor(ii) Glycocalyx          […]

Q.36 The enriched media used to facilitate the growth of fastidious microorganismsare(A) Selenite F broth(B) Blood agar(C) Chocolate agar(D) Loeffler’s serum Blood agar, Chocolate agar, and Loeffler’s serum are enriched […]

Q.35 Which of the following acts as wound hormones in plants?(A) Ethylene(B) Cytokinins(C) Abscisic acid(D) Dextrin Ethylene acts as the primary wound hormone among the given options in plants. This gaseous […]

Q.34 Which of the following are producers in an ecological system?(A) Macrophytes(B) Phytoplanktons(C) Zooplanktons(D) Cyanobacteria Producers in an ecological system are autotrophs that synthesize their own food via photosynthesis or […]

Q.33 Archaeal cell membranes contain lipids that are(A) Ether linked(B) Ester linked(C) Branched alkyl chain(D) Linear alkyl chain Archaeal cell membranes feature unique ether-linked lipids, distinguishing them from bacterial and […]

Q.32 Transfer of plasmids into animal cells can be achieved by(A) Electroporation(B) Liposome–mediated process(C) Calcium chloride treatment(D) Sucrose treatment Correct Answer: (A) Electroporation and (B) Liposome-mediated process Both electroporation and […]

Q.31 Transpirational pull that extends down to the roots in plants can be interruptedby(A) Process of cavitation(B) Process of gravitation(C) Formation of water vapor pockets(D) Positive pressure in xylem sap […]

Q.30 In a nephron, _____ follows the ascending limb of the “loop of Henle”.(A) Descending limb(B) Distal tubule(C) Collecting tubule(D) Proximal tubule The correct answer is (B) Distal tubule. In […]

Q.29 A rise in cytosolic calcium ion concentration just after fertilization in a seaurchin egg leads to(A) Formation of fertilization envelope(B) Acrosomal reaction(C) Formation of vegetal pole(D) Formation of animal […]