| A | B |
| organelle | a specialized part of a cell having some specific job; a cell organ |
| chloroplast | A chlorophyll-containing organelle found in algal and green plant cells. |
| nucleus | a specialized, usually spherical mass of protoplasm encased in a double membrane, and found in most living eukaryotic cells, directing their growth, metabolism, and reproduction, and functioning in the transmission of genic characters. |
| mitochondria | an organelle in the cytoplasm of cells that helps make energy |
| ribosomes | a tiny, mitten-shaped organelle that helps make protein |
| cell | a tiny structure in living things containing a nucleus and other structures |
| cell theory | cells are the basic units of structure and function in living organisms. |
| cell membrane | cells are the basic units of structure and function in living organisms. |
| cytoplasm | substance in a cell between the cell membrane and the nucleuas |
| cell wall | the definite boundary or wall that is part of the outer structure of certain cells, as a plant cell |