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STD 11 - 9. Biomolecules — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 9. Biomolecules1 Mark
MCQ
Which one of the following pairs is not correctly matched
  • A
    Recombinant $DNA$ - $DNA$ formed by the joining of segments of $DNA$ from different sources
  • ✓
    Purine Nitrogenous bases Cytosine, thymine and uracil
  • C
    $ATP$ The principal energy carrying compound in the cell
  • D
    $RNA$ - $RNA$ molecules found in ribosomes
✓

Answer

Correct option: B.
Purine Nitrogenous bases Cytosine, thymine and uracil
b
(b) Because cytosine, thymine and uracil are single ring compound i.e. pyrimidines while adenine and guanine are purines.

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