Although the structures of the functional groups important to life vary in chemical structure, they share one thing in common: [[just type the answer not the letter]]
a) all contain oxygen
b) all have at least one double bond
c) cause the carbon to which they are attached to become an asymmetric carbon, and they convert the molecule into an isomer
d) unite the skeleton into a closed ring
e) are all hydrophilic and increase the organic compound's water solubility

e) are all hydrophilic and increase the organic compound's water solubility

Explanation:

the answer to your question is:

c. complementary base-pairing

answers are:

lysogenic     viral dna merges with host cell dna

lysogenic     no symptoms

lytic               viral dna takes over

lysogenic     virus does not destroy host cell

lytic               virus destroys host cell

lytic               induces symptoms of viral infection

lysogenic       cell reproduces and spreads provirus