NAME ______
OSMOSIS STUDY GUIDE
Complete the following statements:
1. What does the prefix “iso” mean? _Equal/the same_____ (Hint: Use the prefix/suffix reference list on page 1074-1075)
2. What does the prefix “hyper” mean? ___Over, above, beyond______
3. What does the prefix “hypo” mean? _____Low, under, beneath____
4. What does the suffix “tonic” mean? (Hint: You will need to research this piece) _____Tension____
5. __Hyper___tonic means there is a GREATER concentration of solute moleculesOUTSIDE the cell than inside.
6. ____Hypo____ tonic means there is a LOWER concentration of solute moleculesOUTSIDE the cell than inside.
7. _Iso__tonic means there is the SAME concentration of solute moleculesoutside the cell as inside.
8. The pressure inside a plant cell caused by water pushing against the cell wall is called
____Turgor___ pressure.
9. Water ___enters___ cells placed in a HYPOTONIC solution.
enters or leaves (Circle ONE)
____Animal____ cells can SWELL AND BURST, but plant cells have a____cell__ ___walls____ to keep them from bursting.
Placing plant cells in a HYPOTONIC solution causes the osmoticpressure to
increase or decrease (Circle ONE)
Plant and animal cells stay the same size when placed in an _iso__tonic solution because the amount of water leaving the cell is the same and the amount of water entering.
Placing plant cells in a HYPERTONIC solution causes the osmotic pressure to increase decreaseand the cell membrane will pull away from the cell wall.
Animal cells will SHRINK when placed in a
_hyper__tonic solution.
NAME ______*
Cell Transport Systems
1. Active transport requires _E______to move molecules across membranes. Energy
2. _A_ __ __ is the molecule that provides the energy for active transport. ATP
3. Golgi bodies use _E______to release molecules outside the
cell. Exocytosis
4. _D______moves oxygen and carbon dioxide molecules from a high concentration to a low concentration across membranes. Diffusion
5. The cell organelles that burn glucose and provides ATP for active transport are the
_M______, Mitochondria
6. Aquaporins, ion channels, and carrier proteins are all kinds of
_F______D______. Facilitated diffusion
7. A small membrane sac used to transport substances during exocytosis & endocytosis
= _V______Vesicles
8. Kind of endocytosis that takes in small dissolved molecules (solutes) or fluids
= _P______Pinocytosis
9. _P______transport does NOT REQUIRE energy. Passive
10. _A______are membrane proteins that create a passageway across cell membranes for water molecules during _O______. Aquaporins, Osmosis
11. H+ ions are actively moved across cell membranes using _P______pumps. Proton
12. A cell placed in an _I______solution doesn’t swellor shrink because the concentration of molecules outside the cell is the same as inside. Isotonic
13. A solution in which there is a HIGHER concentration of molecules OUTSIDE the cell than inside
= _H______. Hypertonic
14. A CONCENTRATION _G______forms whenever there is a difference in concentration between one place and another. Gradient
15.Pinocytosis, phagocytosis, and Na+-K+ pumps, and proton pumps are all kinds of _A______transport because they use energy to move substances across membranes. Active
16. A solution in which the concentration of molecules outside the cell is LOWER than inside
= _H______. Hypotonic
17. A _S______-_P______P______uses energy from ATP to move three Na+ ions out of a cell while it moves two K+ ions in. Sodium-Potassium Pump
18. Pinocytosis & phagocytosis are both kinds of _E______. Endocytosis
19. When molecules move from high to low along a concentration gradient we say they are moving
“_D______” the concentration gradient. Down
20. _O______pressure is caused by water inside a plant cell pushing against the cell wall. Osmotic
21. White blood cells use _P______to engulf and destroy bacteria that the glycoproteins recognize as “not self”. Phagocytosis
22. When you make Kool-aid the water is the _S______and the Kool-aid powder is the
_S______. Solvent, Solute
23. Ca++, Na+, and K+ move across membranes by going through passageways called
_I______C______. Ion Channels
24. Cell membranes that allow certain molecules to pass through while keeping others out are called
_S______P______. Selectively Permeable