Across
- 4. fundamental unit of a gene, located in the nucleus of cells of living organisms
- 5. system brings air into the body + removes carbon dioxide
- 7. system skeletal muscles, smooth muscles, cardiac muscles
- 8. breaks down food (system)
- 9. central part of most cells that contains genetic material and is enclosed in a membrane
Down
- 1. tough tissues attached to bones, contract + relax for movement
- 2. system that protects major internal organs and provides overall support
- 3. nervous system organ that controls all actions
- 4. system esophagus, stomach, intestines
- 6. sense organ used for sound detection