12/29/2020 T.Y. B. Sc. Paper II Cell and Molecular Biology, Question Bank
T.Y. B. Sc. Paper II Cell and Molecular Biology, Question Bank Dr. Kirti M. Nitnaware Assistant Professor Department of Botany Hutatma Rajguru Mahavidyalaya, Rajgurunagar * Required
1. How many carbon atoms are there in deoxyribose sugar *
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5
6
12
4
2. An example for a purine base in RNA is *
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Thyamine
Adenine
Uracil
cytosine
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3. A nitrogen base combined with pentose sugar is called *
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nucleoside
nucleotide
polypeptide
polynucleotide
4. which of the following is left handed DNA
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A-DNA
B-DNA
C-DNA
Z-DNA
5. Which is metabolically stable form of DNA *
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A-DNA
B-DNA
C-DNA
Z-DNA
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6. Formation of new DNA molecules from the parent DNA which are exactly similar to its replica is called *
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transcription
replication
translation
mutation
7. DNA replication takes place during *
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meiosis
mitosis
interphase between two mitotic cycle
pachytene and diplotene of meiosis
8. In a DNA molecules 680 bases are present, total number of cytosine is 27. Then what will be the composition of other three bases *
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A=213, T=213, G=127
A=127, T=213, G=213
A=213, T=127, G=213
A=127, T=127, G=127
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9. The primer in DNA replication is *
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small deoxyribonucleotide polymer
small ribonucleotide polymer
helix destabilizing protein
topoisomerase
10. The enzymes responsible for joining the okazaki fragments are
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DNA polymerase I
DNA polymerase II
DNA ligase
topoisomerase
11. In proof reading during DNA replication *
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wrong nucleotides are taken out
wrong nucleotides are removed and correct one is inserted
wrong nucleotides are inserted
mutations are prevented
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12. DNA replication is *
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conservative and discontinuous
semiconservative and semidiscontinuous
semiconservative and discontinuous
conservative
13. Nucleotide arrangements in DNA can be seen by *
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X-ray crystallography
electron microscopy
ultra centrifuge
light microscopy
14. Circular DNA present in *
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ER and ribosomes
ribosomes and chloroplast
mitochondria and chloroplast
ribosomes and mitochondria
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15. which of the following is true according to Chargaff's rule *
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A+G=T+C
A=C
G=T
A+T/C+G=1
16. Isotopes used in proving semiconservative replication DNA by Messelson and Sthal were *
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14N,14C
14C,31P
14N,15N
14N,31P
17. During replication DNA gyrase takes part in
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separation of DNA strand in eukaryotes
separation of DNA strand in prokaryotes
synthesis of primer in eukaryotes
synthesis of primer in prokaryotes
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18. The complete replication apparatus moving along the DNA molecule at a replication fork is called
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polysome
replisome
replicon
origin
19. An example of base analog that repair with adenine is *
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ethidium bromide
methyl methane sulfonate
ethylnitrosourea
5-bromo uracil
20. monocistronic mRNA are found in
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prokaryotes
eukaryotes
virus
E. coli
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21. The bright colours of ripe fruits is due to *
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Chromoplasts
Chloroplasts
Amyloplasts
Leucoplasts
22. Factory for synthesis of sugars in autotrophic eukaryotes *
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Mitochondria
Chloroplast
Ribosome
Endoplasmic reticulum
23. Stroma is the ground material of which of these
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Ribosomes
Lysosomes
Mitochondria
Chloroplasts
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24. All are colorless plastids except
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Elaioplst
Amyloplast
Proteinoplast
rhodoplast
25. which one of the following cell organelles is called "protein factories" of cells
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Mitochondria
Ribosomes
Endoplasmic reticulum
Lysosomes
26. The smaller subunit of ribosome in eukaryotes is
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30s
60s
40s
80s
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27. For the union of two subunit of the ribosomes, which ion is needed
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Mg2+
Ca2++
Mn2+
Fe2+
28. The enzyme which help in the formation of peptide bond is
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translocase
peptidyl transferase
DNA polymerase
transaminase
29. cristae in the mitochondria serve as site for
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oxidation reduction reaction
flavoproteins are phosphorylated
protein synthesis
none of the above
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30. Inner membrane of mitochondria is rich in
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phosphatidylserine
phosphatidylinositol
phosphatidylcholine
cardiolipin
31. ATP is synthesized in mitochondria by
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Glycolysis
Gluconeogenesis
Kreb cycle
Glycogenolysis
32. Plant cell wall is made up of
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cellulose, hemicellulose and pectin
cellulose and chitin
cellulose only
cellulose, hemicellulose and chitin
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33. Plasma membrane is made up of
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A protein, a lipid and a cellulose layer
Bimolecular lipid layer surrounded by protein layers
A protein layer between two lipid layers
A lipid layer between two protein layers
34. Which of the following cell organelles regulates the entry and exit of molecules to and from the cell?
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Lysosomes
Golgi bodies
Cell membrane
Mitochondria
35. Which of the following cell organelles is called a suicidal bag?
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Lysosomes
Golgi bodies
Cell membrane
mitochondria
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36. Which of the following is a single membrane-bound organelle?
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Vacuole
Golgi Apparatus
Endoplasmic Reticulum
All of the above
37. Which of the following enzymes are used as a marker for the lysosomes?
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Phospholipase
Acid phosphatase
Pyruvate dehydrogenase
Succinate dehydrogenase
38. Which of the following are the functions of lysosomes?
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Autolysis
Autophagy
Digestion
All of the above
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39. The main function of nucleolus is
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Protein synthesis
ATP production
DNA synthesis
rRNA synthesis
40. Which of the following is not true for chromatin?
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Organized structure of DNA and protein
These are highly condensed DNA
It is found in the nucleus
It contains a single dsDNA
41. Number of annular unit in nuclear membranes are
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4
6
8
10
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42. Chromosomes found in the salivary gland of Drosophila is______.
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Polytene
Lampbrush
A chromosome
B chromosome
43. Lampbrush chromosomes occur in______.
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Oocytes
Cancer cells
Lymph glands
Salivary glands
44. A chromosome with sub-terminal centromere is______.
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Acrocentric
Acentric
Metacentric
Telocentric
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45. Puffs or balbiani rings in the salivary gland chromosome are the sites of______.
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Protein synthesis
RNA synthesis
DNA replication
DNA duplication
46. The diagrammatic representation of karyotype (morphological representation of chromosomes) of a species is known as
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Cladogram
Ecogram
karyotype
Idiogram
47. The point at which polytene chromosomes appear to be attached together is known as
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chromocenter
chromomere
centromere
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48. In which typical stage are Lampbrush chromosomes observed?
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mitotic anaphase
mitotic prophase
mitotic metaphase
meiotic prophase
49. which cell organelle occupy 80% of the total volume of cell
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Chloroplast
mitochondria
nucleus
50. Solution of the vacuole is called
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cell sap
solution
solute
protoplasm
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