| A | B |
| asteroid | rock made of material like planets |
| cell wall | structure around membrane of cells providing support and strength |
| centriole | structure in animal cells used during cell division |
| chloroplast | site of photosynthesis; contains chlorophyl |
| chromosome | coiled structure of DNA and protein in nucleus of cell |
| convergent boundary | boundary that forms when 2 plates come together |
| divergent boundary | boundary where 2 plates move apart |
| hierachy | system of organization moving from most to least complex |
| organ | group of 2 or more tissues organized to perform complex activities |
| OSHA | occupational safety and health organization insures safety in workplace |
| pili | short, hair-like projections on cells that aid in movement |
| tissue | groups of cells that work together to perform specific function; stomach lining |