| A | B |
| cells | building blocks |
| chromosome | contains DNA which carries genetic info |
| mitochondria | power house |
| nucleus | control center |
| golgi body | receives material |
| cytoplasm | jelly-like substance |
| cell theory | explanation of the relationship between cells and living things |
| endoplasmic reticulum | passageways |
| ribosome | protein producers |
| vacuole | storage area |
| chloroplast | produces food in plant cells |
| organelle | carry out specific functions within a cell |
| cell membrane | encloses cells cytoplasm |
| lysosome | breaks down food particles (digestion) in animal cells |
| cell wall | provides support and protection in plant cells |
| unicellular | made of one cell |
| multicellular | made of more than one cell |
| tissue | group of cells |
| organ | group of tissues |
| system | group of organs |
| organism | living thing |
| offspring | descendants (children) |
| trait | characteristic that can be passed to an offspring |
| heredity | passing of traits |
| inherit | to receive traits or qualities |
| DNA | genetic material |
| gene | segment of DNA on a chromosome |
| selective breeding | selecting a few organisms with desired traits |
| natural selection | natural process of the best surviving |