1. Biology Jeopardy Ch 4 Review yippyGot itYepokaywhyyikes 111111 222222 333333 444444 555555

2. When the concentration of dissolved particles outside a cell is equal to the concentration of dissolved particles inside the cell, the cell solution is isotonic 2

3. The binding of specific molecules to _______ controls the ability of particular ions to cross the cell membrane. ion channels 3

4. The transport of specific particles down their concentration gradient through a membrane by carrier proteins is known as ________ facilitated diffusion. 4

5. In _________, energy is required to move a substance across a cell membrane. active transport 5

6. The _________ requires energy to move ions across the cell membrane. sodium-potassium pump 6

7. _________helps the cell rid itself of wastes. exocytosis 7

8. _________ may cause the formation of a second messenger molecule inside a cell. receptor proteins 8

9. As a result of diffusion, the concentration of many types of substances eventually becomes balanced on both sides of a membrane. 9

10. Diffusion is the movement of a substance from an area of high concentration to an area of lower concentration. 10

11. The diffusion of water into or out of a cell is called osmosis. 11

12. A cell will swell when it is placed in a(n) hypotonic solution. 12

13. The interior portion of a cell membrane forms a nonpolar zone that prevents ions and most large molecules from passing through the membrane. 13

14. Sugar molecules cross the cell membrane by facilitated diffusion. 14

15. Unlike passive transport, active transport requires energy 15

16. This term refers to: this is a method of cellular signaling, whereby a diffusable signaling molecule is rapidly generated/released which can then go on to activate effector proteins within the cell to exert a cellular response. second messenger 16

17. This term refers to: this is the condition when the concentration of a substance is equal throughout the space. Equilibrium 17

18. This term refers to: is the movement of a substance from an area of high concentration to an area of lower concentration. diffusion 18

19. This term refers to: this is movement across a cell membrane that does not require energy from the cell passive transport 19

20. This term refers to: this is the process of water moving out of cells. a solution that causes the cells to shrink because of osmosis. hypertonic solution 20

21. This term refers to: this is the process of water moving into cells due to the solution causing a cell to swell due to osmosis hypotonic solution 21

22. This term refers to: When the concentration of dissolved particles outside a cell is equal to the concentration of dissolved particles inside the cell, the cell solution is? isotonic 22

23. This term refers to: is when energy is required to move a substance across a cell membrane active transport 23

24. This term refers to: this requires energy to move ions across the cell membrane. sodium potassium pump 24

25. This term refers to: this is a process where cells absorb material from the outside by engulfing it with their cell membrane endocytosis 25

26. This term refers to: this helps the cell rid itself of wastes. exocytosis 26

27. This term refers to: these may cause the formation of a second messenger molecule inside a cell receptor protein 27

28. This term refers to: this is the difference in the concentration of a substance across space. concentration gradient 28

29. Signal molecules bind to receptor proteins. 29

30. the sodium-potassium pump usually pumps potassium ions into the cell. 30

31. The diffusion of ____________ through cell membranes is called osmosis. water 31