| A | B |
|---|
| Cell Theory | all living things are made up of one or more cells |
| cytoplasm | gelatin-like substance in cells |
| microscopes | a tool for seeing tiny things, including cells |
| prokaryotic | primitive cells, the kind of cell that has no organelles |
| chromosomes | the hereditary material contained in the nucleus |
| chloroplast | captures energy from the sun |
| mitochondria | converts food energy into a form the cell can use |
| organ system | a group of organs that work together |
| vacuole | stores food, water, minerals and waste in the cells |
| bacteria | smallest organisms on Earth, each of which is made up of only one cell |
| cell membrane | flexible structure that holds a cell together, forms a boundary between the cell and its environment, and helps control what enters and leaves the cell |
| cell wall | structure of plants, algae, fungi, and many types of bacteria that supports and protects the cell membrane |
| organelle | specialized cell parts that perform a cell's activities |
| nucleus | cell organelle that contains the hereditary material |
| photosynthesis | process by which plants, algae, and many types of bacteria make their own food |
| chloroplast | green organelle in a plant's leaf cells where most photosynthsesis takes place |
| tissue | group of similar cells that all do the same work |
| organ | structure made of two or more different tissue types that work together to do a certain job |
| eukaryotic | sophisticated, complex cells with membrane bound organelles |
