Space

4. System: A group of organs that work together (e.g., circulatory, respiratory, digestive).
5. An organelle found in plant cells that captures energy from sunlight.
7. The process of cell division that results in two identical daughter cells.
9. Theory: The fundamental scientific theory that all living things are composed of cells.
11. Cells: Cells that have a specific structure to perform a particular function (e.g., nerve cells vs. muscle cells).
12. A change in an organism’s environment that causes a response.
13. A bacterium, virus, or other microorganism that can cause disease.

1. The movement of molecules from an area of high concentration to low concentration.
2. The sum of all chemical reactions that occur within a living organism.
3. The process by which organisms maintain a stable internal environment despite external changes.
6. The process by which plants use sunlight, water, and carbon dioxide to create glucose and oxygen.
8. The diffusion of water through a semi-permeable membrane.
9. Respiration: The process of breaking down glucose to yield energy ($ATP$) in the presence of oxygen.
10. The organelle responsible for energy production; the "powerhouse" of the cell.
14. A group of similar cells working together to perform a specific task.