Flow of individuals in and out of a population introduces new alleles and increase genetic variation within that population. Mutations: changes to an organisms DNA that create diversity within a population by introducing new alleles.
The ATP molecule can store energy in the form of a high energy phosphate bond joining the terminal phosphate group to the rest of the molecule. In this form, energy can be stored at one location, then moved from one part of the cell to another, where it can be released to drive other biochemical reactions.
The ripened ovary of an angiosperm flower. Fruits, like flowers, are the unique aspects of reproduction in angiosperms. They protect the enclosed seed, and aid in their dispersal.