DNA and RNA

Now, the study of biology is responsible for some of the most profound insights that humans have, about the world around them. So, take a look at these four panoramas. In the upper left, you see some bacteria this happen to be equal line, you obviously see a butterfly, a flower, a dolphin. If you see that at the outer space, just looks these different forms and structures. You have no idea that they were all related to one to another. So one of the most profound thing that biology told us is that all life on the earth is exceptionally related similar to one to another. So, for example, all of these life forms rely on DNA and RNA for storing and transmitting in using their genetic and inherited information. They are all based on cells. Cell is the fundamental building block of all life. All of these organisms consist of cells, and the cells essentially have the same chemicals inside of them - carbon, hydrogen, oxygen and nitrogen, and the whole bunch of other stuff and much smaller amount. All these organisms conducted metabolism, in other words, chemical reactions that using convert energy from one to the other. And basic chemistry is all very similar to one and another. The type of molecule is used very similar to one and another.