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Q.23 Components of a Transmission Electron Microscope are(A) Electron gun, objective lens, positron beam, projector lens(B) Neutron beam, projector lens, objective lens, evacuated tube(C) Electron beam, projector lens, objective lens, […]

Q.22 The stationary phase of cation–exchange chromatography can be(A) DEAE–cellulose(B) CM–cellulose(C) Sephadex G–50(D) Heparin–Sepharose Cation-Exchange Chromatography Stationary Phase: CSIR NET Solved Question The correct answer to the question “The stationary […]

Q.21 DNA gyrase can(A) cut single–stranded DNA(B) relax supercoiled DNA(C) introduce negative supercoiling in DNA(D) not utilize ATP DNA gyrase, a type II topoisomerase found in bacteria, primarily introduces negative […]

Q.20 The major product formed in the given reaction is The major product of this reaction is the tert‑butyl‑substituted cyclopentyl aldehyde, i.e. option (D). The mechanism proceeds through diazotization of the […]

Q.19 Match the followingGroup I                                                    […]

Q.18 The bacterium that can tolerate high concentrations of salt and also fermentmannitol is(A) Staphylococcus aureus(B) Staphylococcus epidermis(C) Streptococcus pyogenes(D) Serratia marcescens Staphylococcus aureus is the bacterium that tolerates high salt […]

Q.17 Which of the following enzymes is absent in a person suffering fromAlkaptonuria?(A) Tyrosinase(B) Homogentisic acid oxidase(C) Catechol dioxygenase(D) Phenylalanine hydroxylase Homogentisic acid oxidase is absent in Alkaptonuria. This rare genetic […]

Q.16 A man having a dominant genetic trait (TT genotype) can tastephenylthiocarbamide (PTC), marries a woman who cannot taste PTC. The PTCtasting ability of their biological son and daughter is(A) […]

Q.15 An organism that causes obstruction of lymphatic system in humans is ____.(A) Borrelia burgdorferi(B) Brucella abortus(C) Yersinia pestis(D) Wuchereria bancrofti Wuchereria bancrofti is the correct answer (D). This filarial […]

Q.14 The zone of a pond system where respiration is more than production is calledas _____.(A) Limnetic zone(B) Littoral zone(C) Epilimnion zone(D) Benthic zone The correct answer is (D) Benthic zone. […]