1. Cell Transport

2. Diffusion Process by which molecules tend to move from an area of high concentration to low concentration

5. http://highered.mcgraw- hill.com/sites/0072495855/student_vi ew0/chapter2/animation__how_diffus ion_works.html

6. Homeostasis Process by which organisms maintain a relatively stable internal environment

8. Semi-Permeable Membrane The outer layer that allows certain substances to pass into & out of a cell

10. Osmosis Diffusion of water through a selectively permeable membrane

13. http://highered.mcgraw- hill.com/sites/0072495855/student_vi ew0/chapter2/animation__how_osmo sis_works.html

14. Isotonic Concentration of particles is the same inside as outside

15. Isotonic

16. Hypertonic Solution outside cell has a higher particle concentration than inside cell

17. Hypertonic

18. Hypotonic Solution outside cell has a lower particle concentration than inside cell

19. Hypotonic

20. http://www.savevid.com/video/egg- osmosis-hypertonic-vs-hypotonic- solution.html

21. Animal Cells

22. Plant Cells

23. Active Transport Transport across a membrane that requires energy

24. http://www.dnatube.com/video/1589/Cell ular-transprot-of-sodium-and-potassium- active-transport

25. Endocytosis molecules moving “into” a cell forming vesicles Exocytosis molecules moving “out of” a cell from vesicles

27. http://highered.mcgraw- hill.com/olcweb/cgi/pluginpop.cgi?it=swf:: 535::535::/sites/dl/free/0072437316/1200 68/bio02.swf::Endocytosis%20and%20Exoc ytosis

28. Passive Transport Does NOT require energy to move across a membrane

29. Facilitated Diffusion Movement of molecules across a membrane via protein channels

31. http://www.goldiesroom.org/video_a rchive.htm