Across
- 6. a large sack-like storage area
- 8. single-celled organism
- 10. the process by which plants make food
- 12. living thing that provides a source of energy for a virus
- 13. the region inside a cell membrane
- 15. a close relationship where at least one of the species benefits
Down
- 1. chemicals that produce color
- 2. stable internal conditions
- 3. the basic unit of structure of an organism
- 4. a chemical that makes the walls rigid
- 5. organisms that live on or in a host and cause harm to the host
- 7. composed of many cells
- 9. look similar to green jelly beans and make the plant's food
- 11. the branching, threadlike tubes that make up the bodies of multicellular fungi
- 14. small, nonliving part particle that invades and reproduces inside a cell
- 16. a form of asexual reproduction that yeast cells undergo