Cell Membrane Crossward Flashcards Preview

Biology 2015-2016 > Cell Membrane Crossward > Flashcards

Flashcards in Cell Membrane Crossward Deck (24):
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

Opposite of endocytosis

Exocytosis