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Structure Of DNA and RNA- Part 1
See all quizzes of Structure Of DNA and RNA here:
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. The genetic material in HIV is
a. ds DNA b. ss DNA
c. s RNA d. None of these
3. Which one of the following mutagens act
only on replicating DNA?
a. Ethidium bromide
b. Nitrosogeranidine
c. Acridine orange
d. None of above
4. Poly A tail is frequently found in
a. Histone in RNA b. Bacterial RNA
c. eukaryotic RNA d. TRNA
5. Which of the following is an example of
RNA virus?
a. SV 40
b. T4 phage
c. Tobacco mosaic virus
d. Adeno virus
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
a. Clones b. Genomic library
c. mRNA d. None of these
7. Transgenic animals are produced when
GH gene fused with
a. MT gene b. GH
c. GRF d. FIX
8. In which medium the hydridoma cells
grow selectively?
a. Polyethylene glycol
b. Hypoxanthine aminopterin thyminine
c. Hypoxathing-guaning phosphoribosyl
transferase
d. Both b and c
9. The enzymes which are commonly used
in genetic engineering are
a. Exonuclease and ligase
b. Restriction endonuclease and polymerase
c. Ligase and polymerase
d. Restriction endonuclease and ligase
10. A successful hybridoma was produced by
fusing
a. Plasma cells and plasmids
b. Plasma cells and myeloma cells
c. Myeloma cells and plasmids
d. Plasma cells and bacterial cells
MCQs IN MICROBIOLOGY
11. The technique involved in comparing the
DNA components of two samples is
known as
a. Monoclonal antibody techniques
b. Genetic finger printing
c. Recombinant DNA technology
d. Polymerase chain reaction
12. Plasmids are ideal vectors for gene
cloning as
a. They can be multiplied by culturing
b. They can be multiplied in the laboratory using
enzymes
c. They can replicate freely outside the bacterial
cell
d. They are self replicating within the bacterial
cell
13. Humans normally have 46 chromosomes
in skin cells. How many autosomes
would be expected in a kidney cell?
a. 46 b. 23
c. 47 d. 44
14. Pasteur effect is due to
a. Change from aerobic to anaerobic
b. Providing oxygen to anaerobically respiring
structures
c. Rapid utilization of ATP
d. Nonsynthesis of ATP
15. A mechanism that can cause a gene to
move from one linkage group to another
is
a. Trans location b. Inversion
c. Crossing over d. Duplication
16. The smallest unit of genetic material that
can undergo mutation is called
a. Gene b. Cistron
c. Replicon d. Muton
17. The two chromatids of metaphase
chrosome represent
a. Replicated chromosomes to be separated at
anaphase
b. Homologous chromosomes of a diploid set
c. Non-homologous chromosomes joined at the
centromere
d. Maternal and paternal chromosomes joined
at the centromere
18. Malate dehydrogenase enzyme is a
a. Transferase b. Hydrolase
c. Isomerase d. Oxido reductase
19. In E.Coli att site is in between
a. Gal and biogenes
b. Bio and niacin genes
c. Gal and B genes
d. None of these
20. The best vector for gene cloning
a. Relaxed control plasmid
b. Stringent control plasmid
c. Both a and b
d. None of these
21. A gene that takes part in the synthesis of
polypeptide is
a. Structural gene b. Regulator gene
c. Operator gene d. Promoter gene
22. DNA replicates during
a. G1 – phase b. S – phase
c. G2 – phase d. M – phase
23. A human cell containing 22 autosome
and a ‘Y’ chromosome is probably a
a. Male somatic cell
b. Zygote
c. Female somatic cell
d. Sperm cell
24. Crossing-over most commonly occurs
during
a. Prophase I b. Prophase II
c. Anaphase I d. Telophase II
25. DNA-replication is by the mechanism of
a. Conservative b. Semiconservative
c. Dispersive d. None of the above
26. Production of RNA from DNA is called
a. Translation b. RNA splicing
c. Transcription d. Transposition
27. Nucleic acids contain
a. Alanine b. Adenine
c. Lysine d. Arginine
28. What are the structural units of nucleic
acids?
a. N-bases b. Nucleosides
c. Nucleotides d. Histones
29. The most important function of a gene is
to synthesize
a. Enzymes b. Hormones
c. RNA d. DNA
30. One of the genes present exclusively on
the X-chromosome in humans is
concerned with
a. Baldness
b. Red-green colour baldness
c. Facial hair/moustache in males
d. Night blindness
