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Across 5. Unicellular eukaryotes that are specialized to live in many different environments. 10. The control center of the cell; it contains genetic material. 11. A eukaryotic cell containing membrane-bound organelles without a cell wall or chloroplast. 13. A cell that lacks a true nucleus and membrane bound organelles. 14. baseic unit of life 15. The membrane bound structures in a cell that carry out the cell's internal processes. 16. A eukaryotic cell that contains membrane-bound organelles in addition to a cell wall and chloroplasts. 17. Unicellular prokaryotes that live nearly everywhere. Can be helpful or harmful to other living organisms. 18. A semi-permeable layer surrounding all cells; allows for the maintenance of homeostasis. 19. An organelle found in plant cells that allow plants to make their own food using energy from the sun.

Down 1. Gel-like material in all cells, provides water an nutrients to the cell. 2. The "power-house" of the cell; the energy producing organelle. 3. The organelle that contains digestive enzymes to help a cell break down materials. 4. An organelle that takes in excess water in a cell through the process of osmosis; it also stores material. 6. Any organism composed of only one cell. 7. The genetic material that codes for traits. 8. A cell that contains a true nucleus. 9. Any organism composed of more than one cell; carries out more complex life functions. 12. Surrounds the cell membrane in plant cells; maintains support and structure.