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Across 4. Cells that have an organized nucleus and membrane bound organelles. 8. Organelle that stores water, wastes and other materials. 10. Organic compounds that contain carbon, hydrogen, and oxygen. 12. Organism made of cells that need energy, water and gases and can reproduce, grow, repair injuries, respond and adapt, and excrete wastes. 13. Basic unit of structure and function in all living organisms. 15. Organisms that are composed of only one cell. 16. Element found in all organic compounds. 17. Smallest unit of a substance that still has the properteis ofthat substance. 18. Organic compounds that contain carbon, hydrogen, and oxygen. 19. The movement of molecules from and area of high concentration to an area of low concentration. 20. A substance that cannot be broken down into any other substances by chemical or physical means.

Down 1. Simple cells that do not have an organized nucleus. 2. The process by which plants and some other organisms capture light energy and use it to make food from carbon dioxide and water. 3. Organelle that controls all of the cell's activities and contains chromosomes. 5. Organic compounds that contain carbon, hydrogen, oxygen, nitrogen and sometimes sulfur. 6. Element found in all organic compounds. 7. Structure found in the nucleus of a cell that is made up of DNA which contains the genetic information passed to offspring. 9. A substance made of two or more elements chemically combined in a set ratio. 10. Green pigment in plant cells that traps light for photosynthesis. 11. Small organ-like structures that make up cells and perform specific functions. 14. Anything living.