Basic Components of Nucleic Acids - Nitrogenous bases, Ribose and Phosphate group. The bases are Purines (A,G) and Pyrimidine (C,T,U). Ribose, Phosphate. http://www.biochemden.com/basic-components-nucleic-acids-purines-pyrimidines
It’s a computer – inside a cockroach. Nano-sized entities made of DNA that are able to perform the same kind of logic operations as a silicon-based computer have been introduced into a living animal. The DNA computers – known as origami robots because they work by folding and unfolding strands of DNA – travel around the insect’s body and interact with each other, as well as the insect’s cells. When they uncurl, they can dispense drugs carried in their folds.
Figure 4-4. Complementary base pairs in the DNA double helix.