1 Mr. Brownlow, the man who was robbed, takes pity on Oliver and takes him back to his house. 2  Oliverâs sick, and Mr. Brownlow and his housekeeper take care of him. 3  Once Oliver is better, he is entrusted with some money and an errand in the city.
Hydrogen bonding is important in many chemical processes. Hydrogen bonding is responsible for water's unique solvent capabilities. Hydrogen bonds hold complementary strands of DNA together, and they are responsible for determining the three-dimensional structure of folded proteins including enzymes and antibodies.
The two DNA strands are complementary and parallel, but they go in opposite directions. The antiparallel structure of DNA is important in DNA replication because it replicates the leading strand one way and the lagging strand the other way. The antiparallel strands allow for the formation of hydrogen bonds between the nitrogenous bases of DNA. If the strands were not antiparallel these nonsymetrical hydrogen bonding interactions would not be possible. It is important that CG interactions have three H- bonds, and AT have two H-bonds.