The Plasma Membrane

Front 1

cell membrane
function
description

Back 1

a thin layer of lipids and protein(phospholipids)controls what leaves and enters the leaves

Front 2

phospholipid
structure
function

Back 2

make up the lipid bilayer which makes up the cell membrane

Front 3

polar and nonpolar regions
(hydrophillic or hydrophobic)

Back 3

polar-easily dissolves in water(hydorphillic)
nonpolar-(hydrophobic)

Front 4

selectively permeable-def.

Back 4

not all subtances can pass through its membrane

Front 5

glycoprotein-def.

Back 5

carbsand proteins that serve as cell markers and indentification of a cell

Front 6

membrane proteins
functions

Back 6

regulate which particles can or cannot pass through the cell membrane: act as enzymes

Front 7

integral membrane proteins
structure
function

Back 7

proteins that have hydrophobic and hydrophillic regions

Front 8

perpheral proteins

Back 8

membrane protein that is only exposed to the cytoplasm and some of the outside cell

Front 9

facts about the fuid mosaic model

Back 9

liquid bilayer; semi- permeable membrane; move laterally; made up of phospholipids

Front 10

3 organic molecules that cannot pass through the cell membrane, but must be transported by membrane proteins

Back 10

amino acids;ions;largermolecule(glucose)

Front 11

passive transport- def.

Back 11

move along the concentration gradientfrom high concentration low concentration(energy not neeeded)

Front 12

3 ex. of passive transport

Back 12

osmosis, diffusion, facilltated diffusion

Front 13

active transport- def.

Back 13

move molecules along the concentration gradient from high concentration to low concentration(use energy)

Front 14

2 ex. of active transport

Back 14

endocytosis exocytosis

Front 15

diffusion- def.

Back 15

random movement of ions and other particles from high concentration to low concentration

Front 16

osmosis- def.

Back 16

the diffusion of water into and out of cells that move across selectively permeable membranes from high concentration to low concentration

Front 17

endocytosis- def.

Back 17

process in which the plasma membrane engulfs the particle and then takes it into the cell

Front 18

exocytosis-def.

Back 18

when waste is trappeds in vesiclces that move across the cell and take them into a vacuole that release them outside the cell

Front 19

3 ex. of endocytosis

Back 19

phagocytosis,pinocytosis, REM

Front 20

pinocytosis- def.

Back 20

when the plamsa membrane forms a vacuole surrounding lliquids and taking them into the cell(cell drinking)

Front 21

phagocytosis

Back 21

when the plasma membrane surrounds a large piece of material by forming a vacuole and digesting it into a conjunction with lysosomes(cell eating)

Front 22

receptor mediated endocytosis-def.

Back 22

special receptors embedded in the membrane that will pick up specific materials and bring them into the cell

Front 23

concentration gradient- def.

Back 23

difference between the concentration of a particular molecule in one area and its concentration adjacent to that area

Front 24

dynamic equilibrium- def.

Back 24

after some time a substance is moving but has the same concentration

Front 25

protein channel- def.

Back 25

a channel that allow certain ions to pass through"pore"

Front 26

carrier protein-steps

Back 26

change shape so that substances can enter the cell

Front 27

description of the movement of molecules in active transport

Back 27

molecules move from area from higher concentration to areas of lower concentration

Front 28

hypertonic solution-def.

Back 28

a comcentration of solutes outside the cell is greater than inside

Front 29

hypotonic solution- def.

Back 29

concentration of solute inside the cell is greater that outside

Front 30

plasmolysis- def.

Back 30

shriveling of a cell when placed in a hypertonic solution

Front 31

what happens to a cell when placed in a hypertonic
hypotonic
isotonic solution

Back 31

hyper- plasmolysis
hypo-cytolisis
iso- stays the same

Front 32

what happens to a plant cell when placed in a hypertonic
hypotonic
isotonic solution

Back 32

hyper- plasmolysis
hypo-swells up
iso- stays the same

Front 33

turgor pressure- def.

Back 33

the water pressure againist a cell wall

Front 34

cytolisis- def.

Back 34

bursting of the cell

Front 35

hydrophobic- def.

Back 35

"water-hating"

Front 36

hydrophillic- def.

Back 36

"water-loving"

Front 37

ex. of hypertonic solution

Back 37

saltwater

Front 38

ex. of hypotonic solution

Back 38

distilled water

Front 39

4 molecules that can pass through the cell membrane via diffusion

Back 39

ethanal,carbon dioxide,oxygen, water

Front 40

osmotic balance- def.

Back 40

the water pressure is the same

Front 41

4 molecules that can pass through tthe cell membrane via facilitated diffusion

Back 41

ions, glucose, proteins, amino acids

Front 42

what do gates require to close and open them?

Back 42

hormones