| A | B |
|---|
| cell membrane | protective outer covering of all cells that regulates the interaction between the cell and the environment |
| cytoplasm | gel like material inside cell that contains hereditary material and is the location of most of a cell's processes |
| cell walls | rigid structure that encloses, supports, and protects the cells of plants |
| organelles | structure in the cytoplasm of a eukaryotic cell that can act as a storage site |
| nucleus | controls all the activities of a cell and contains hereditary material |
| chloroplasts | green, chlorophyll-containing, plant-cell organelle that uses light energy to produce sugar from carbon dioxide and water |
| mitochondria | cell organelle that breaks down food and releases energy |
| ribosomes | small cytoplasmic structure on which cells make their own proteins |
| endoplasmic reticulum | moves materials around in a cell and is made up of a complex series of folded membranes; can be rough or smooth |
| golgi bodies | organelles that package cellular materials and transport them within the cell or out of the cell |
| tissue | group of similar cells that work together to do one job |
| organ | structure, such as the heart, made up of different types of tissues that all work together |
| cell theory | states that all organisms are made up of one or more cells, the cell is the basic unit of life, cells come from other cells |
| virus | strand of hereditary material surrounded by a protein coating |
| host cell | living cell in which a virus can actively multiply or in which a virus can hide until activated by environmental stimuli |
