Cell The smallest unit of a living thing that can perform all life processes.
Nucleus The control center for the cell
Cytoplasm Contains the things that the cell needs to carry out its life processes
Chloroplast The special parts in plant cells that trap the Suns energy
Genus A group of closely related living things.
Species A group of similar organisms that can mate and produce offspring that can also produce offspring A horse and donkey are different species, but their offspring, called a mule, cannot reproduce.