Unit B: Cells & Systems

4. Any of the fine branching blood vessels that form a network between the arterioles and venules
5. A part of an organism that performs a specific task
7. Structures in a cell that performs a certain function
10. A many celled organism
12. One of the systems of branching vessels or tubes moving blood from various parts of the body to the heart
13. A process of which an organism comes from another
16. An invention that is used to view cells
17. The basic unit of life
18. Means the purpose or task
20. An organism that works together to form an organ
21. A characteristic that helps an organism to live in an environment
24. What an organism requires to live

1. An action in response to a stimulus
2. A preventive inoculation to create an immunity against a disease
3. Another word for mycoplasma
6. A hair like structure that move back and forth like oars
8. Something that activates an organism or part to a functional activity
9. Life that is composed of different parts that maintain numerous vital processes
10. A type of microscopic organism
11. An organism that is made up of only a single cell
14. Foot-like projections
15. The fluid that circulates within the vascular system of humans and other vertebrates
19. Important organ whose function is to pump/circulate blood through a human or other vertebrates' system
22. A process where substances move through
23. A group of tissue that work together to perform a specific task or function