| A | B |
|---|
| cells | smallest unit that can perform all life processes |
| animalcules | means 'little animals' |
| protists | single-celled organisms |
| cell membrane | protective layer that covers the cell's surface |
| cytoplasm | fluid and almost all of its contents |
| organelles | structures that perform specific functions within the cell |
| DNA | genetic material that carries information needed to make new cells |
| nucleus | contains the cell's DNA |
| prokaryotic | cells without a nucleus |
| eukaryotic | cells with a nucleus |
| ribosomes | tiny, round organelles made of protein and other material |
| types of archaebacteria | heat-loving, salt-loving, methane-making |
| multicellular | means many cells |
