Prentice Hall Biology 7.3 And 7.4

Front 1

osmosis

Back 1

diffusion of water through a selectively permeable membrane

Front 2

isotonic

Back 2

when the concentration of two solutions is the same

Front 3

hypertonic

Back 3

when comparing two solutions, the solution with the greater concentration of solutes

Front 4

hypotonic

Back 4

when comparing two solutions, the solution with the lesser concentration of solutes

Front 5

facilitated diffusion

Back 5

movement of specific molecules across cell membranes through protein channels

Front 6

active transport

Back 6

energy-requiring process that moves material across a cell membrane against a concentration difference

Front 7

endocytosis

Back 7

process by which a cell takes material into the cell by infolding of the cell membrane

Front 8

phagocytosis

Back 8

process in which extensions of cytoplasm surround and engulf large particles and take them into the cell

Front 9

pinocytosis

Back 9

process by which a cell takes in liquid from the surrounding environment

Front 10

exocytosis

Back 10

process by which a cell releases large amounts of material

Front 11

cell specialization

Back 11

the process in which cells develop in different ways to perform different tasks

Front 12

tissue

Back 12

group of similar cells that perform a particular function

Front 13

organ

Back 13

group of tissues that work together to perform closely related functions

Front 14

organ system

Back 14

group of organs that work together to perform a specific function

Front 15

cell membrane

Back 15

thin, flexible barrier around a cell; regulates what enters and leaves the cell

Front 16

cell wall

Back 16

strong supporting layer around the cell membrane in plants, algae, and some bacteria

Front 17

lipid bilayer

Back 17

double-layered sheet that forms the core of nearly all cell membranes

Front 18

concentration

Back 18

the mass of solute in a given volume of solution, or mass/volume

Front 19

diffusion

Back 19

process by which molecules tend to move from an area where they are more concentrated to an area where they are less concentrated

Front 20

equilibrium

Back 20

when the concentration of a solute is the same throughout a solution

Front 21

osmosis

Back 21

diffusion of water through a selectively permeable membrane

Front 22

isotonic

Back 22

when the concentration of two solutions is the same

Front 23

hypertonic

Back 23

when comparing two solutions, the solution with the greater concentration of solutes

Front 24

hypotonic

Back 24

when comparing two solutions, the solution with the lesser concentration of solutes

Front 25

facilitated diffusion

Back 25

movement of specific molecules across cell membranes through protein channels

Front 26

active transport

Back 26

energy-requiring process that moves material across a cell membrane against a concentration difference

Front 27

endocytosis

Back 27

process by which a cell takes material into the cell by infolding of the cell membrane

Front 28

phagocytosis

Back 28

process in which extensions of cytoplasm surround and engulf large particles and take them into the cell

Front 29

pinocytosis

Back 29

process by which a cell takes in liquid from the surrounding environment

Front 30

exocytosis

Back 30

process by which a cell releases large amounts of material

Front 31

cell specialization

Back 31

the process in which cells develop in different ways to perform different tasks

Front 32

tissue

Back 32

group of similar cells that perform a particular function

Front 33

organ

Back 33

group of tissues that work together to perform closely related functions

Front 34

organ system

Back 34

group of organs that work together to perform a specific function

Front 35

cell membrane

Back 35

thin, flexible barrier around a cell; regulates what enters and leaves the cell

Front 36

cell wall

Back 36

strong supporting layer around the cell membrane in plants, algae, and some bacteria

Front 37

lipid bilayer

Back 37

double-layered sheet that forms the core of nearly all cell membranes

Front 38

concentration

Back 38

the mass of solute in a given volume of solution, or mass/volume

Front 39

diffusion

Back 39

process by which molecules tend to move from an area where they are more concentrated to an area where they are less concentrated

Front 40

equilibrium

Back 40

when the concentration of a solute is the same throughout a solution