Flashcards in Cell Membrane Crossward Deck (24)
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1
These molecules might have trouble crossing the membrane and will require the help of transport proteins
Polar molecules - because cannot go through directly because of phospholipid bilayer
2
This condition occurs when too much water enters a cell and the cell bursts
Cytolysis
3
The pressure of water inside a plant cell
Turgor pressure
4
Materials tend to move from an area of ____ concentration to an area of _____ concentration
High to low
5
Found in the cell membrane to aid the passage of certain polar molecules
Transport proteins
6
A balance the cell maintains
Homeostasis
7
The membrane is said to be _____ permeable
Selectively
8
The movement of cells through protein channels
Facilitated diffusion because needs help of protein channels
9
The difference between the amount of solutes and solvent that may exist on opposite sides of the membrane
Concentration gradient
10
The engulfing of large proteins into the cell
Phagocytosis
11
When are protein pumps used
To move small molecules across the membrane
12
Endocytosis:
Process of taking matieral into the cell by means of infoldings/pockets of the cell membrane
13
The type of lipids found in the cell membrane
Phospholipids
14
The movement of water from an area of high concentration to low
Osmosis (because it is water)
15
Cellular drinking:
Pinocytosis
16
The release of very large molecules from the cell
Exocytosis
17
When too much water leaves the cell and it collapses
Plasmolysis
18
The spreading out of molecules from an area of high concentration to low
Diffusion
19
How does endocytosis work
A pocket opens up in cell membrane and forms a vacuole - the food goes in and then the membrane/cytoplasm closes back up
20
Two types of endocytosis
Phagocytosis, pinocytosis
21
Phagocytosis:
Engulfing large particles of food - eating
22
Pinocytosis:
Cellular drinking
23
Exocytosis:
Throwing up contents - release of large materials from the cell
24
