Across
- 3. organ system that takes oxygen into the body and expels carbon dioxide
- 4. central structure that controls all activities of the cell.; contains the DNA
- 5. system of organs that controls the body through chemical messengers called hormones
- 9. a living thing made of cells
- 10. organ system involved in creating a new organism
- 12. Gel-like fluid that protects organelles and provides cell shape.
- 13. Rigid layer that helps protect and support a plant cell; gives it a shape.
- 15. system of organs and tissues that controls and coordinates the body's activities
- 17. a group of organs that work together to do a specific job
- 18. organ system that transports substances through the body
- 19. Involuntary actions that keep conditions inside the body such as temperature at a constant
- 21. Thin layer that forms the outside boundary of the cell and controls what enters and exits the cell.
- 23. organ system that breaks down food into substances that the body can use, and helps with the absorption of these substances
Down
- 1. Organ system consisting of the skin and associated organs such as glands and nails; protects internal structures.
- 2. Powerhouse of the cell, organelle that converts the glucose in food to energy.
- 6. organ system that enables movement of the body and circulation
- 7. a structure made of two or more tissues that performs a specific function
- 8. Organelles that store water, nutrients, and other materials in both plant and animal cells; become large and fill with water to provide support to plant cells.
- 11. organ system involved in removal of waste products from the body
- 12. An organelle found in plant and algae cells where photosynthesis occurs
- 14. the basic unit of structure and function in living things
- 16. organ system that works to protect the body from disease
- 20. organ system that provides support for the body through an internal framework
- 22. a structure made of a group of cells that work together to do a specific job