GATE XL Microbiology Mock Test 03 (GATE XL 2018 Exam) GATE XL Model Questions GATE XL Previous Year Papers Welcome to GATE 2018 (GATE XL Microbiology Mock Test 03) This Mock Test consists of 15 questions in MCQ format. At the end of the mock test, you have to click on the 'SUBMIT' button to see your Score and the Correct Answers. Please click on the 'NEXT' button to Start the Mock Test... 1. YAC behaves similar to normal chromosome because it have: Centromere Centromere, Telomere and ARS Centromere and Telomere Telomere and ARS2. A mutation changes the codon in such a way that there is no effect on functioning and overall structure of protein. This type of mutation is termed as: Transition Mis-sense mutation Silent mutation Frame-shift mutation3. The bacteria can be best stored under starvation at 40C than at 370C because: Increases enzyme efficiency Large mortality so low competition Overall metabolic activity will be lowered Membrane freezes4. In Severe Combined Immunodeficiency (SCID) syndrome there is: Low macrophages Low number of T or B cells Low number of neutrophils Low amount of IgG5. Among the following which statement is correct about the promoter of a gene? Promoters are recognized due to their different secondary structures It is located downstream of translation start site Different promoter elements are recognized by different RNA polymerases It is always located upstream of transcription start site6. Replicative transposons increase their copy number by replicating its copies and inserting into new place while keeping its copy at the original place. The enzyme involved in this processes are: Transposase, Resolvase and Integrase Transposase and Integrase Transposase Transposase and Resolvase7. Most abundant immunoglobulin in the serum is: IgM IgA IgG IgE8. Split genes are present in: All organisms Most of eukaryotes and some eubacteria All eukaryotes Most of eukaryotes and some archaebacteria9. Inhibitor of RNA polymerase during elongation of transcription in both prokaryotes and eukaryotes is α-amanitin Actinomycin –D Streptomycin Rifampicin 10. The only class of immunoglobulin that can cross placenta: IgE IgM IgA IgG11. Sucrose does not occur in its anomeric form while its hydrolyzed product glucose and fructose have anomers. The reason is Sucrose is polysaccharide Sucrose is not soluble in water C1 of glucose and C1 of fructose are bonded in glycosidic linkage C1 of glucose and C2 of fructose are bonded in glycosidic linkage12. The signaling molecule secreted by bacterial species during quorum sensing: Auto-suppressor Q-inducer Quorom Auto-inducer13. E. coli lac operon is a: Negatively controlled inducible operon Positively controlled inducible operon Positively controlled repressible operon Negatively controlled repressible operon14. Which of the following cells have poly-morphonucleus? B-cells Basophil Erythrocyte Macrophage 15. The first immunoglobulin made by the fetus: IgM IgA IgG IgEYou have reached at the End of this Mock Test. Please Click 'SUBMIT' button to see your Score and the Correct Answers... More Online Mock Tests… Please follow the links below… GATE XL Bioche.GATE XL Micro.GATE XL BotanyGATE XL ZoologyGATE XL Food Tec.GATE EY EcologyCSIR JRF NETICMR JRFDBT BET JRFGATE - BTIIT JAM - BTIIT JAM - BLGS - BiologySET - BotanySET - ZoologyNEET Get our Updates on GATE XL Papers in your E-mail Inbox We will not spam your account… Enter your e-mail address Don’t forget to Activate your Subscription…. Please See Your E-Mail… Browse more in Easy Biology Class… Lecture NotesBiology PPTVideo TutorialsBiology MCQQuestion BankDifference betweenPractical AidsMock Tests (MCQ)Biology Exams If you like this post, Please COMMENT . . . . (below ↓) Please Share with your Friends, Relatives, Students and Colleagues… Related posts: GATE XL 2018 Life Sciences – Microbiology Mock Test 01 GATE XL Microbiology Mock Test 02 (GATE XL 2018 Exam) GATE XL Biochemistry Free Online Mock Test 01 (GATE 2018 Practice Questions) GATE XL 2018 Life Sciences – Botany Mock Test 01 GATE XL 2018 Life Sciences – Botany Practice Questions (Mock Test 02) Posted in GATE Life Sciences (XL), GATE Microbiology Mock Test, Microbiology, Mock (Practice) Tests and tagged GATE Microbiology, GATE Microbiology Mock Test, GATE XL, Microbiology Mock Test, Microbiology Practice Questions.