In a nucleotide,the phosphate linkage is generally attached to -

Write a note on the chemical composition of nucleic acids.

The total number of hydrogen bonds in a $DNA$ double helix strand,where one strand has the following sequence of bases,is $...........$
$5^{\prime}-G-G-C-A-A-A-T-C-G-G-C-T-A-3^{\prime}$

Given below are two statements:
Statement $I$: Cytosine and guanine are formed in equal quantities in $DNA$ hydrolysis.
Statement $II$: Adenine and uracil are formed in equal quantities in $RNA$ hydrolysis.
The correct answer is:

Which of the following is not a type of $RNA$?

If one strand of $DNA$ has the sequence $ATCGTATG$,the sequence in the complementary strand would be