MCQs on Structure of DNA and RNA for Staff Nurse and Medical Exams

<div dir="ltr" style="text-align: left;" trbidi="on"><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjuRRV1pdt6w-Lv3t4ljIRmDTc45hVuig9lq_R040iVcg66jtnRJtxt-pQjr-2SfZRbITf_RGt5lVPoRv05ZLUjkOKZ0-6UOU3B0moXKLyoa7sac7CtwvtnXWIgB3w4M3ls3zsIpLZ_b5WB/s1600/maxresdefault+1.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="326" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjuRRV1pdt6w-Lv3t4ljIRmDTc45hVuig9lq_R040iVcg66jtnRJtxt-pQjr-2SfZRbITf_RGt5lVPoRv05ZLUjkOKZ0-6UOU3B0moXKLyoa7sac7CtwvtnXWIgB3w4M3ls3zsIpLZ_b5WB/s640/maxresdefault+1.jpg" width="640" /></a></div><div class="content_1">1. A peculiar cytochrome is observed in bacteria and it can react with molecular oxygen, what is it?<br />a. Cyt b<br />b. Cyt c<br />c. Cyt d<br />d. Cyt o<br /><input color="black" onclick="value=("Answer : D ")" type="button" value="Show Answer" /><br /><br />2. The genetic material in HIV is<br />a. ds DNA<br />b. ss DNA<br />c. s RNA<br />d. None of these<br /><input color="black" onclick="value=("Answer : A ")" type="button" value="Show Answer" /><br /><br />3. Which one of the following mutagens act only on replicating DNA?<br />a. Ethidium bromide<br />b. Nitrosogeranidine<br />c. Acridine orange<br />d. None of above<br /><input color="black" onclick="value=("Answer : C ")" type="button" value="Show Answer" /><br /><br />4. Poly A tail is frequently found in<br />a. Histone in RNA<br />b. Bacterial RNA<br />c. eukaryotic RNA<br />d. TRNA<br /><input color="black" onclick="value=("Answer : C ")" type="button" value="Show Answer" /><br /><br />5. Which of the following is an example of RNA virus?<br />a. SV 40<br />b. T4 phage<br />c. Tobacco mosaic virus<br />d. Adeno virus<br /><input color="black" onclick="value=("Answer : C ")" type="button" value="Show Answer" /><br /><br />6. Genomic DNA is extracted, broken into fragments of reasonable size by a restriction endonuclease and then inserted into a cloning vector to generate chimeric vectors. The cloned fragments are called<br />a. Clones<br />b. Genomic library<br />c. mRNA<br />d. None of these<br /><input color="black" onclick="value=("Answer : B ")" type="button" value="Show Answer" /><br /><br />7. Transgenic animals are produced when GH gene fused with<br />a. MT gene<br />b. GH<br />c. GRF<br />d. FIX<br /><input color="black" onclick="value=("Answer : A ")" type="button" value="Show Answer" /><br /><br />8. In which medium the hydridoma cells grow selectively?<br />a. Polyethylene glycol<br />b. Hypoxanthine aminopterin thyminine<br />c. Hypoxathing-guaning phosphoribosyl transferase<br />d. Both b and c<br /><input color="black" onclick="value=("Answer : B ")" type="button" value="Show Answer" /><br /><br />9. The enzymes which are commonly used in genetic engineering are<br />a. Exonuclease and ligase<br />b. Restriction endonuclease and polymerase<br />c. Ligase and polymerase<br />d. Restriction endonuclease and ligase<br /><input color="black" onclick="value=("Answer : A ")" type="button" value="Show Answer" /><br /><br />10. A successful hybridoma was produced by fusing<br />a. Plasma cells and plasmids<br />b. Plasma cells and myeloma cells<br />c. Myeloma cells and plasmids<br />d. Plasma cells and bacterial cells<br /><input color="black" onclick="value=("Answer : B ")" type="button" value="Show Answer" /><br /><br /></div><div class="content_2" style="display: none;">11. The technique involved in comparing the DNA components of two samples is known as<br />a. Monoclonal antibody techniques<br />b. Genetic finger printing<br />c. Recombinant DNA technology<br />d. Polymerase chain reaction<br /><input color="black" onclick="value=("Answer : B ")" type="button" value="Show Answer" /><br /><br />12. Plasmids are ideal vectors for genecloning as<br />a. They can be multiplied by culturing<br />b. They can be multiplied in the laboratory using enzymes<br />c. They can replicate freely outside the bacterial cell<br />d. They are self replicating within the bacterial cell<br /><input color="black" onclick="value=("Answer : D ")" type="button" value="Show Answer" /><br /><br />13. Humans normally have 46 chromosomes in skin cells. How many autosomes would be expected in a kidney cell?<br />a. 46<br />b. 23<br />c. 47<br />d. 44<br /><input color="black" onclick="value=("Answer : D ")" type="button" value="Show Answer" /><br /><br />14. Pasteur effect is due to<br />a. Change from aerobic to anaerobic<br />b. Providing oxygen to anaerobically respiring structures<br />c. Rapid utilization of ATP<br />d. Nonsynthesis of ATP<br /><input color="black" onclick="value=("Answer : B ")" type="button" value="Show Answer" /><br /><br />15. A mechanism that can cause a gene to move from one linkage group to another is<br />a. Trans location<br />b. Inversion<br />c. Crossing over<br />d. Duplication<br /><input color="black" onclick="value=("Answer : A ")" type="button" value="Show Answer" /><br /><br />16. The smallest unit of genetic material that can undergo mutation is called<br />a. Gene<br />b. Cistron<br />c. Replicon<br />d. Muton<br /><input color="black" onclick="value=("Answer : D ")" type="button" value="Show Answer" /><br /><br />17. The two chromatids of metaphase chrosome represent<br />a. Replicated chromosomes to be separated at anaphase<br />b. Homologous chromosomes of a diploid set<br />c. Non-homologous chromosomes joined at the centromere<br />d. Maternal and paternal chromosomes joined at the centromere<br /><input color="black" onclick="value=("Answer : A ")" type="button" value="Show Answer" /><br /><br />18. Malate dehydrogenase enzyme is a<br />a. Transferase<br />b. Hydrolase<br />c. Isomerase<br />d. Oxido reductase<br /><input color="black" onclick="value=("Answer : D ")" type="button" value="Show Answer" /><br /><br />19. In E.Coli att site is in between<br />a. Gal and biogenes<br />b. Bio and niacin genes<br />c. Gal and B genes<br />d. None of these<br /><input color="black" onclick="value=("Answer : A ")" type="button" value="Show Answer" /><br /><br />20. The best vector for gene cloning<br />a. Relaxed control plasmid<br />b. Stringent control plasmid<br />c. Both a and b<br />d. None of these<br /><input color="black" onclick="value=("Answer : A ")" type="button" value="Show Answer" /><br /><br /></div><div class="content_3" style="display: none;">21. A gene that takes part in the synthesis of polypeptide is<br />a. Structural gene<br />b. Regulator gene<br />c. Operator gene<br />d. Promoter gene<br /><input color="black" onclick="value=("Answer : A ")" type="button" value="Show Answer" /><br /><br />22. DNA replicates during<br />a. G1 – phase<br />b. S – phase<br />c. G2 – phase<br />d. M – phase<br /><input color="black" onclick="value=("Answer : B ")" type="button" value="Show Answer" /><br /><br />23. A human cell containing 22 autosome and a ‘Y’ chromosome is probably a<br />a. Male somatic cell<br />b. Zygote<br />c. Female somatic cell<br />d. Sperm cell<br /><input color="black" onclick="value=("Answer : B ")" type="button" value="Show Answer" /><br /><br />24. Crossing-over most commonly occurs during<br />a. Prophase I<br />b. Prophase II<br />c. Anaphase I<br />d. Telophase II<br /><input color="black" onclick="value=("Answer : A ")" type="button" value="Show Answer" /><br /><br />25. DNA-replication is by the mechanism of<br />a. Conservative<br />b. Semiconservative<br />c. Dispersive<br />d. None of the above<br /><input color="black" onclick="value=("Answer : B ")" type="button" value="Show Answer" /><br /><br />26. Production of RNA from DNA is called<br />a. Translation<br />b. RNA splicing<br />c. Transcription<br />d. Transposition<br /><input color="black" onclick="value=("Answer : C ")" type="button" value="Show Answer" /><br /><br />27. Nucleic acids contain<br />a. Alanine<br />b. Adenine<br />c. Lysine<br />d. Arginine<br /><input color="black" onclick="value=("Answer : B ")" type="button" value="Show Answer" /><br /><br />28. What are the structural units of nucleic acids?<br />a. N-bases<br />b. Nucleosides<br />c. Nucleotides<br />d. Histones<br /><input color="black" onclick="value=("Answer : C ")" type="button" value="Show Answer" /><br /><br />29. The most important function of a gene is to synthesize<br />a. Enzymes<br />b. Hormones<br />c. RNA<br />d. DNA<br /><input color="black" onclick="value=("Answer : A ")" type="button" value="Show Answer" /><br /><br />30. One of the genes present exclusively on the X-chromosome in humans is concerned with<br />a. Baldness<br />b. Red-green colour baldness<br />c. Facial hair/moustache in males<br />d. Night blindness<br /><input color="black" onclick="value=("Answer : B ")" type="button" value="Show Answer" /><br /><br /></div><div class="content_4" style="display: none;">31. Peptide linkages are formed in between<br />a. Nucleotides<br />b. Amino acids<br />c. Glucose molecules<br />d. Sucrose<br /><input color="black" onclick="value=("Answer : B ")" type="button" value="Show Answer" /><br /><br />32. The nucleic acid of polio viruses is<br />a. DNA<br />b. RNA – (+) type<br />c. t-RNA<br />d. m-RNA<br /><input color="black" onclick="value=("Answer : B ")" type="button" value="Show Answer" /><br /><br />33. Rabies virus is<br />a. Nake RNA virus<br />b. Naked DNA virus<br />c. Enveloped RNA virus<br />d. Enveloped DNA virus<br /><input color="black" onclick="value=("Answer : C ")" type="button" value="Show Answer" /><br /><br />34. Example for DNA virus:<br />a. Polio virus<br />b. Adeno virus<br />c. Echo virus<br />d. Poty virus<br /><input color="black" onclick="value=("Answer : B ")" type="button" value="Show Answer" /><br /><br />35. In genetic engineering breaks in DNA are formed by enzymes known as<br />a. Restriction enzymes<br />b. Ligases<br />c. Nucleases<br />d. Hydralases<br /><input color="black" onclick="value=("Answer : B ")" type="button" value="Show Answer" /><br /><br />36. DNA transfer from one bacterium to another through phages is termed as<br />a. Transduction<br />b. Induction<br />c. Transfection<br />d. Infection<br /><input color="black" onclick="value=("Answer : A ")" type="button" value="Show Answer" /><br /><br />37. Microorganisms usually make acetyl CO-A by oxidizing<br />a. Acetic acid<br />b. Pyruvic acid<br />c. a-ketoglutaric acid<br />d. Fumaric acid<br /><input color="black" onclick="value=("Answer : A ")" type="button" value="Show Answer" /><br /><br />38. The method of DNA replication proposed by Watson and Crick is<br />a. Semi conservative<br />b. Conservative<br />c. Dispersive<br />d. Rolling loop<br /><input color="black" onclick="value=("Answer : A ")" type="button" value="Show Answer" /><br /><br />39. The distance between each turn in the helical strand of DNA is<br />a. 20 Ao<br />b. 34 Ao<br />c. 28 Ao<br />d. 42 Ao<br /><input color="black" onclick="value=("Answer : B ")" type="button" value="Show Answer" /><br /><br />40. Self-replicating, small circular DNA molecules present in bacterial cell are known<br />a. Plasmids<br />b. Cosmids<br />c. Plasmomeros<br />d. plastides<br /><input color="black" onclick="value=("Answer : A ")" type="button" value="Show Answer" /><br /><br /></div><div class="content_5" style="display: none;">41. Western blotting is the technique used in the determination of<br />a. RNA<br />b. DNA<br />c. Proteins<br />d. All of these<br /><input color="black" onclick="value=("Answer : B ")" type="button" value="Show Answer" /><br /><br />42. m RNA synthesis from DNA is termed<br />a. Transcription<br />b. Transformation<br />c. Translation<br />d. Replication<br /><input color="black" onclick="value=("Answer : A ")" type="button" value="Show Answer" /><br /><br />43. Western blotting is a technique used in the determination of<br />a. DNA<br />b. RNA<br />c. Protein<br />d. Polysaccharides<br /><input color="black" onclick="value=("Answer : A ")" type="button" value="Show Answer" /><br /><br />44. Building blocks of Nucleic acids are<br />a. Amino acids<br />b. Nucleosides<br />c. Nucleotides<br />d. Nucleo proteins<br /><input color="black" onclick="value=("Answer : C ")" type="button" value="Show Answer" /><br /><br />45. DNA finger printing is based on<br />a. Repetitive sequences<br />b. Unique sequences<br />c. Amplified sequences<br />d. Non-coding sequences<br /><input color="black" onclick="value=("Answer : B ")" type="button" value="Show Answer" /><br /><br />46. The enzyme required for DNA from RNA template:<br />a. RNA polymerase<br />b. Reverse transcriptase<br />c. DNA polymerase<br />d. Terminal transferase<br /><input color="black" onclick="value=("Answer : B ")" type="button" value="Show Answer" /><br /><br />47. Double standard RNA is seen in<br />a. Reo virus<br />b. Rhabdo virus<br />c. Parvo virus<br />d. Retro virus<br /><input color="black" onclick="value=("Answer : A ")" type="button" value="Show Answer" /><br /><br />48. Example for DNA viruses:<br />a. Adeno virus<br />b. Bacteriophage T1, T2, T3, T4, T5, T6<br />c. Papova virus<br />d. Herpes virus and cauliflower moisaic<br />e. All of the above<br /><input color="black" onclick="value=("Answer : E ")" type="button" value="Show Answer" /><br /><br />49. The following are the RNA viruses, except<br />a. Reo viruses<br />b. Retro viruses<br />c. Bacteriophage F C<br />d. Tmv and Bacteriophages Ms2, F2<br />e. Dahila mosaic virus and Bacteriophages F × 174, M12, M13<br /><input color="black" onclick="value=("Answer : E ")" type="button" value="Show Answer" /><br /><br />50. The two strands of DNA are joined noncovalently by<br />a. Ionic bonds<br />b. Covalent bonds<br />c. Hydrogen bonds between bases<br />d. Polar charges<br /><input color="black" onclick="value=("Answer : C ")" type="button" value="Show Answer" /><br /><br /></div><div class="content_6" style="display: none;">51. The bases Adenine and Thymine are paired with<br />a. Double hydrogen bonds<br />b. Single hydrogen bonds<br />c. Triple hydrogen bonds<br />d. Both b and c<br /><input color="black" onclick="value=("Answer : A ")" type="button" value="Show Answer" /><br /><br />52. The no. of hydrogen bonds existing between Guanine and Cytosine are<br />a. 5<br />b. 2<br />c. 3<br />d. None of these<br /><input color="black" onclick="value=("Answer : C ")" type="button" value="Show Answer" /><br /><br />53. The length of each coil in DNA strand is<br />a. 15 Ao<br />b. 34 Ao<br />c. 30 Ao<br />d. 5 Ao<br /><input color="black" onclick="value=("Answer : B ")" type="button" value="Show Answer" /><br /><br />54. Nucleic acids are highly charged polymers due to<br />a. There is phosphodiester bond between 5’- hydroxyl of one ribose and 3’–hydroxyl of next ribose<br />b. They have positive and negative ends<br />c. Nucleotides are charged structures<br />d. Nitrogenous bases are highly ionized compounds<br /><input color="black" onclick="value=("Answer : A ")" type="button" value="Show Answer" /><br /><br />55. The best studied example for specialized transduction is<br />a. P1 phage<br />b. P22 phage<br />c. ë-phage<br />d. Both a and c<br /><input color="black" onclick="value=("Answer : C ")" type="button" value="Show Answer" /><br /><br />56. The diagrammatic representation of the total no. of genes in DNA is<br />a. Genome<br />b. Gene map<br />c. Gene-structure<br />d. Chromatin<br /><input color="black" onclick="value=("Answer : B ")" type="button" value="Show Answer" /><br /><br />57. During specialized transduction<br />a. Large amound of DNA is transferred<br />b. A few no. of genes are transferred<br />c. Whole DNA is transferred<br />d. None of these<br /><input color="black" onclick="value=("Answer : B ")" type="button" value="Show Answer" /><br /><br />58. The cell donating DNA during transformation is<br />a. Endogenate<br />b. Exogenate<br />c. Mesozygote<br />d. Merosite<br /><input color="black" onclick="value=("Answer : B ")" type="button" value="Show Answer" /><br /><br />59. Genetic information transfer DNA to RNA is called –<br />a. Transcriptase<br />b. Transduction<br />c. Transformation<br />d. Recombination<br /><input color="black" onclick="value=("Answer : A ")" type="button" value="Show Answer" /><br /><br />60. The gene transfer occurs by –<br />a. Transformation<br />b. Transduction<br />c. Conjugation<br />d. Cell fusion<br /><input color="black" onclick="value=("Answer : A ")" type="button" value="Show Answer" /><br /></div><b>Go to next Page: <span style="color: #3d85c6;"></span></b><br /><div class="post-pagination"><b><span style="color: #3d85c6;"><a class="button_1" href="https://www.blogger.com/blogger.g?blogID=8452087976066462573#">Part 1</a><a class="button_2" href="https://www.blogger.com/blogger.g?blogID=8452087976066462573#">Part 2</a><a class="button_3" href="https://www.blogger.com/blogger.g?blogID=8452087976066462573#">Part 3</a><a class="button_4" href="https://www.blogger.com/blogger.g?blogID=8452087976066462573#">Part 4</a><a class="button_5" href="https://www.blogger.com/blogger.g?blogID=8452087976066462573#">Part 5</a><a class="button_6" href="https://www.blogger.com/blogger.g?blogID=8452087976066462573#">Part 6</a></span></b></div></div>

dna mcq medical rna staff nurse staffnursemcq MCQs on Structure of DNA and RNA for Staff Nurse and Medical Exams

1. A peculiar cytochrome is observed in bacteria and it can react with molecular oxygen, what is it? a. Cyt b b. Cyt c c. Cyt d d. Cyt o 2. ...

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