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#Question id: 4947


The first genes on Earth were probably

#XL - S Microbiology
  1. DNA produced by reverse transcriptase from abiotically produced RNA.

  2. DNA molecules whose information was transcribed to RNA and later translated in polypeptides.

  3. auto-catalytic RNA molecules.

  4. RNA produced by autocatalytic, proteinaceous enzymes.


Answer:- Option(s): 3


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#Question id: 3756

#XL - Q Biochemistry

 In E. coli, which enzyme catalyzes the elongation of a new DNA strand in the 5' → 3' direction?

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#Question id: 3757

#XL - Q Biochemistry

Which of the following characteristics of eukaryotic telomeres cause them to replicate differently than the rest of the chromosome?

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#Question id: 3759

#XL - Q Biochemistry

In E. coli, to repair a thymine dimer by nucleotide excision repair, in which order do the necessary enzymes act?

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#Question id: 3760

#XL - Q Biochemistry

In E. coli, what is the function of DNA polymerase III?

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#Question id: 3761

#XL - Q Biochemistry

 Which of the following statements correctly describes the difference between ATP and the nucleotides used during DNA synthesis?

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#Question id: 3762

#XL - Q Biochemistry

Why does a new DNA strand elongate only in the 5' to 3' direction during DNA replication?

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