Cells And Body System

2. A microscopic organism
4. Group of tissues that work together to perform a specific function
5. A temporary projection of the cytoplasm of certain cellscilia
8. These cells generally do not replicate and simply die after their life cycle is complete. Most of the human body's cells are specialized cells, such as muscle, skin and nerve cells
13. A microscope that has two or more lenses and has a light source
17. A purpose or task
19. respond or behave in a particular way in response to something
20. any of the kinds of cells normally found circulating in the blood.
21. An optical devise use3d for viewing very small objects;has at least two lenses;the objective and the eyepeice lens
22. the involuntary constriction and relaxation of the muscles of the intestine or another canal, creating wavelike movements that push the contents of the canal forward
23. Parts of an organism that perform specific tasks

1. Living things
3. All the life process that take place in the cell; includes energy-using and energy-creating process
6. A selectively permeable cell membrane is one that allows certain molecules or ions to pass through it by means of active or passive transport
7. An organisms reaction to a simulus
9. act in such a way as to have an effect on another; act reciprocally
10. the intermingling of substances by the natural movement of their particles.
11. A microscopic organism
12. Group of similar cellsworking together to perform a specific function
14. having or consisting of many cells.Unicellular
15. Group of oragns that work together to perform a certain task such as digestion or breathing
16. Structures in cells that perform a certain function
18. Tiny blood vessels that connect arteries to veins; one cell layer thick and extreamly narrow