In the $5'$ end of a $DNA$ molecule:

  • A
    The fifth carbon of pyrimidine base is free
  • B
    The fifth carbon of purine base is free
  • C
    The fifth carbon of pentose sugar is free
  • D
    Both $(a)$ and $(c)$

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In the structure of $DNA$,which components are positioned opposite to each other,at an equal distance,and in opposite directions?

In $DNA$,$20 \%$ of the bases are adenine. What percentage of bases are pyrimidines (in $\%$)?

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Which of the following is known as soluble $RNA$ $(sRNA)$?

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