Question 1
Which of the following is
not part of a nucleotide?
◦ cyclic amine base
◦ phosphoric acid
◦ a sugar
◦ fatty acid
Question 2
The attractive force between the cylic amine bases in DNA is
◦ disulfide bridges.
◦ ionic interactions of salt bridges.
◦ hydrogen bonding.
◦ hydrophobic stacking.