| A | B |
|---|
| cell | the basic unit of structure and function in all living things |
| microscope | an instrument that makes small objects look larger |
| cell theory | a widely accepted explanation of the relationship between cells and living things |
| organelles | tiny cell structures that carry out specific functions within the cell |
| cell wall | rigid layer of non-living material that surrounds the cells of plants |
| cell membrane | the outer boundary of a cell that controls what goes into and out of the cell |
| nucleus | control center of the cell; directs all cell activity |
| cytoplasm | thick, gel-like fluid that fills the space in a cell |
| mitochondria | convert energy in food molecules to energy the cell can use to carry out its functions |
| endoplasmic reticulum | passageways that carry proteins and other materials from one part of the cell to another |
| ribosomes | produce proteins; may be attached to the ER or free-floating in the cytoplasm |
| Golgi body | receive proteins and other newly formed materials from the endoplasmic reticulum, package them, and distribute them to other parts of the cell |
| vacuole | storage area of the cell |
| lysosome | small, round structures containing chemicals that break down certain materials in the cell |
