Osmosis And Diffusion Test

Front 1

What is
made of a phospholipid bilayer
protects the cell's organelles
is a barrier that allows certain molecules in and out of the cell?

Back 1

The cell membrane

Front 2

What process is demonstrated when air freshener molecules are spread throughout the room?
( Remember Demonstration)

Back 2

Diffusion

Front 3

Why does the cell membrane represent a fluid mosaic model?

Back 3

because phospholipids float and slide past each other

Front 4

What is...
Movement of molecules from low to high concentration
includes diffusion and osmosis?
requires no energy

Back 4

Passive transport

Front 5

Describe the structure of a cell membrane

Back 5

a double layer of phospholipids with phosphate groups facing outward and fatty acid tails facing each other.

Front 6

If 25 gas molecules are clumped toward the left side of a box, they are considered to have a(n)__________

Back 6

concentration

Front 7

These molecules want to move until they establish a(n)
__________.

Back 7

equilibrium

Front 8

Which are nonpermeable to the cell membrane?

Back 8

ions
polar molecules
large molecules

Front 9

Which are permeable to the cell membrane?

Back 9

water

Front 10

Finish the sentence:
Water diffuises a cell membrane

Back 10

...in osmosis

Front 11

What happens once molecules reach equilibrium

Back 11

they continue to move but there is no net movement

Front 12

In what environment would a cell be in homeostasis?

Back 12

Isotonic

Front 13

In a hypertonic solution, the cell is in an environment with
_______________.

Back 13

less water and more solute than the cell.