MCAT Question of the Day
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    Q:

    		 DNA strands with higher percentages of G and C nucleotides have higher melting temperatures than strands with higher percentages of A and T nucleotides. This is because:
    		 

    A

    		 G and C nucleotides form covalent bonds while A and T nucleotides form hydrogen bonds.

    B

    		 G and C nucleotides are smaller and thus more closely packed together.

    C

    		 G and C nucleotides form 3 hydrogen bonds while A and T nucleotides form only two.

    D

    		 G and C nucleotides are larger and thus have higher boiling points.



    Nucleic Acid Structure and Function |
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