| A | B |
|---|
| life functions | processes that occur in all living things |
| organism | a living thing |
| cell | the building block of living things |
| nucleus | the structure within the cell that controls cell activities |
| cell membrane | the outer covering of the cell that controls the flow of materials into and out of the cell |
| cytoplasm | the gel-like substance that fills the cell |
| organelle | a small structure within the cytoplasm that carries out a special life function |
| multicellular | containing more than one cell |
| photosynthesis | the process through which plants use the energy in sunlight to produce food |
| unicellular | consisting of a singular cell |
