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Q.41 The generation time of E. coli is 20 minutes. If there are 106 E. coli present in anexponentially growing synchronous culture, then the average time (in minutes) required toobtain […]

Q.40 Which of the following gas(es) function(s) as signaling molecule(s) in the human nervoussystem?(A) Nitric oxide(B) Carbon monoxide(C) Helium(D) Argon Nitric oxide (NO) and carbon monoxide (CO) act as gaseous […]

Q.39 Which of the following is(are) CORRECT?(A) Both glucose and fructose have the same molecular formula(B) The positions of the oxygen and carbon differ in the structures of glucose and […]

Q.38 Consider two bodies with equal masses of 1012 kg each and R distance apart. Let G be thegravitational constant and V0 be a constant with dimensions of energy. Which […]

Q.37 Which of the following curve/straight line equations will pass through the origin whenplotted on a graph? (A) -x/2+y/2=0 (B)1+y+x=1(C)xy=1(D)2y-2x+2=0 Option (A) passes through the origin. A curve or line passes […]

Q.36 Protozoa are(A) unicellular (B) multicellular (C) eukaryotic (D) prokaryotic Protozoa are unicellular eukaryotic microorganisms belonging to the Kingdom Protista. The correct answer to the multiple-choice question is (A) unicellular, […]

Q.35 Which of the following is(are) CORRECT?(A) Light has wave nature only(B) Light can have both wave and particle nature(C) Photo electric effect shows that light can behave like particles(D) […]

Q.34 DNA and RNA are acidic in nature due to the presence of(A) pentose sugar(B) nitrogenous bases(C) phosphate groups(D) large number of hydrogen bonds DNA and RNA are acidic in […]

Q.33 Which of the following is(are) involved in the activation of cytotoxic T cells?(A) MHC I(B) FcR(C) T cell receptor(D) CTLA 4 MHC class I (MHC I), the T cell […]

Q.32 Which of the following is(are) TRUE about photosynthesis?(A) In C3 plants the first organic product of carbon fixation is 3-phosphoglycerate(B) In C4 plants the first organic product of carbon […]