Basic Molecular Biology MCQ

Basic Molecular Biology

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1. Which enzyme is used to join nicks in the DNA strand?

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2. Which enzyme is used in the unwinding of DNA?

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3. Which of the following base-pairing rule is correct?

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4. During DNA replication the synthesis of the __________strand of DNA results in_________ fragments

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5.  Short strands of _________primer are used in DNA replication

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6.  Which of the following regarding the basic mechanism of gene expression is correct?

 

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7.  With respect to nucleosides which of the following is paired correctly?

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8.  According to Chargaff’s rule the two strands of DNA has ___________

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9.  In one strand of a double stranded DNA the rate of occurrence of A is 3 times C in consecutive 10 bases. So how many G will be there in 100 base pairs of a DNA duplex?[Consider G=T in one strand].

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10.  Which of the following function of DNA is necessary for the purpose of evolution?

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11. DNA always carries the genetic information for all organisms.

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12.  What should be the complementary strand of 3’….ATGGCTTGA….5’?

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13. It is easy to break the bond between A and T than in between G and C.

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14.  Check which one of the following mechanisms is wrongly paired with its location of occurrence?

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15.  Which of the following is not a part of a nucleoside?

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16.  Polymerization of dNTP by DNA polymerase is in 3’ → 5’ direction.

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17. Which enzyme is responsible for synthesizing a complementary DNA strand during DNA replication?

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18. Where does translation occur in a eukaryotic cell?

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19. During transcription, what type of RNA is synthesized from a DNA template?

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20. What is the central dogma of molecular biology?

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