Chapter 8.3 Vocab (Cell Transfer)

Question 1

lipid bilayer

Answer 1

flexible, double layered sheet that makes up the semipermeable cell membrane and forms a barrier between cell and surroundings

Question 2

concentration

Answer 2

the measure of the amount of a solute in a solution, or the increase of a solutions concentration

Question 3

diffusion

Answer 3

movement from an area of high to low concentration

Question 4

equilibrium

Answer 4

evenly distributed throughout- the concentration inside and outside the cell is balanced and there is an even constant transfer of molecules

Question 5

osmosis

Answer 5

diffusion of water through the membrane

Question 6

isotonic

Answer 6

when a concentration of 2 solutions are the same (no water movement to or from cell)

Question 7

hypertonic

Answer 7

higher solute concentration (water moves into cell)

Question 8

hypotonic

Answer 8

lower solute concentration (water moves out of cell)

Question 9

facilitated diffusion

Answer 9

process of spontaneous diffusion when molecules pass across the membrane with the help of a transport molecule (doesn’t use energy)

Question 10

active transport

Answer 10

uses energy (usually ATP) to move cells mostly from higher to lower concentration

Question 11

phagocytosis

Answer 11

moving large solids/particles into the cell using energy

Question 12

endocytosis

Answer 12

ingestion of material into the cell membrane to form a vacuole

Question 13

exocytosis

Answer 13

materials are released outside the cell by fusing vacuole to the cell membrane and release of carried material

Question 14

pinocytosis

Answer 14

cell takes in fluids along with dissolved small molecules (similar to endocytosis)

Question 15

solute

Answer 15

particle dissolving in a solvent