Cells to Systems

4. System, A group of organs that work together to perform complex functions in the body, such as the digestive or respiratory system.
7. Cells, Cells that have unique structures and functions tailored to perform specific tasks in an organism, such as nerve cells or muscle cells.
9. The organelle that contains the cell's genetic material (DNA) and controls cell activities.
11. Organelles are known as the "powerhouses" of the cell, where energy production occurs.
12. The basic unit of life that makes up all living organisms.
13. Cells, Simple cells without a nucleus or organelles, typically found in bacteria.
15. Tiny openings on the surface of leaves that allow for gas exchange (carbon dioxide in and oxygen out).
17. The process by which cells convert glucose and oxygen into energy, producing carbon dioxide and water as byproducts.
18. Wall, A rigid outer layer found in plant cells that provides structure and support.

1. Organelles found in plant cells that are responsible for photosynthesis.
2. The process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen.
3. A structure made up of different types of tissues that work together to perform a specific function, such as the heart or lungs.
5. A group of similar cells that work together to perform a specific function.
6. Small, finger-like projections in the small intestine that increase surface area for nutrient absorption.
8. Cells, Cells that have a nucleus and organelles, found in organisms like plants and animals.
10. Membrane, The outer layer of a cell that controls what enters and exits the cell.
14. Cells, Specialised cells that surround stomata and control their opening and closing to regulate gas exchange.
16. Specialised structures within a cell that perform specific functions, such as the nucleus and mitochondria.