Blog

Q.3 Which one of the following organelles is enclosed by a single membrane? (A) Ribosome (B) Mitochondria (C) Endoplasmic reticulum (D) Centrosome Endoplasmic reticulum (C) is the organelle enclosed by […]

Q.2 Which one of the following statements is CORRECT for Mycoplasma? (A) Their cells are of definite shape. (B) They are resistant to lysis by osmotic shock. (C) Their growth […]

Q.1 Which one of the following protozoan parasites belongs to the phylum Apicomplexa? (A) Toxoplasma gondii (B) Leishmania donovani (C) Entamoeba histolytica (D) Trichomonas vaginalis Toxoplasma gondii belongs to the […]

Q.60 An infinitely long solenoid of radius r and number of turns per unit length n carries a steady current I. The ratio of the magnetic fields at a point […]

Q.59 Let ā = 4î – 2ĵ + 6k̂ and b̂ = 7î + ĵ – 12k̂. If ā × b̂ = αî + βĵ + k̂γ, then the value […]

Q.58 The standard emf of a cell (in V) involving the reaction, 2 Ag+ (aq.) → Ag (s) + Ag2+ (aq.) at 298 K is _________. [Correct to two decimal […]

Q.57 The concentration of NaCl (in mM) formed at the stoichiometric equivalence point when 10 mL of 0.1 M HCl solution is titrated with 0.2 M NaOH solution is ________. […]

Q.56 Two identical, infinite conducting plates are kept parallel to each other and are separated by adistance d. The uniform charge densities on the plates are +σ and –σ. The […]

Q.55 The total number of DNA molecules present after 5 cycles of polymerase chain reaction (PCR)starting with 3 molecules of template DNA is ________. The total number of DNA molecules […]

Q.54 In a bacterium, a mutation resulted in an increase of KS (substrate-specific constant) for ammoniumfrom 50 μM to 5000 μM without affecting μ max . The specific growth rate […]