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Proteins that help to open up DNA helix ...

Proteins that help to open up DNA helix in front of the replication fork in prokaryotes are

A

topoisomerases

B

unwindases (helicases)

C

polymerase I

D

exonucleases and endonuclease

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The correct Answer is:
B
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AAKASH SERIES-MOLECULAR BASIS OF INHERITANCE-Exercise-II
  1. Diameter and pitch per turn of helix of 'A' model of DNA is

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  2. The double helical molecular model of DNA was given by Watson and Cric...

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  3. Proteins that help to open up DNA helix in front of the replication fo...

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  4. Eukaryotes differ from prokaryotes in the mechanism of DNA replication...

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  5. Which of the following genetic units moves from one chromosome to anot...

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  6. If 50 heavy DNA (N^(15)) molecules are replicated 2 times in N^(14) me...

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  7. Taylor experiment on Vicia faba (faba bean) root tips using autoradiog...

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  8. Which one of the following ratios is variable but constant for a speci...

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  9. All the body cells are of same origin and therefore, have same genes, ...

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  10. The wrong base if added, is removed and proper base is usually added d...

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  11. RNA polymerase, discovered by Ochoa (1953) is a holoenzyme and has how...

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  12. The number of start codons and stop codons in a genetic code are

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  13. If a triplet on template DNA is AAA, what will be the anticodon on tRN...

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  14. Who suggested that diseases are caused by inborn errors of metabolism?

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  15. An auxotroph is

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  16. Which one of the following is not uniform in all DNA molecules?

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  17. In many cells ribosomes occur in chains along messenger RNA. What is t...

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  18. Which of the following statements is wrong?

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  19. Value (constant value) of Dna refers to

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  20. In tryptophan operon, the tryptophan acts as

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