Cell Transport Flashcards
When solute particles in a solution collide and spread out moving from an area with high concentration to an area with low concentration
Diffusion
When the concentration of the substance is the same on both sides of the cell membrane
Equilibrium
When substances diffuse across membranes without the cell having to use cellular energy.
Passive transport
When molecules pass through special channel proteins because they cannot directly diffuse across the membrane
Facilitated diffusion
Does not require additional energy because it is still diffusion
Facilitated diffusion
Water channel proteins that allow water to pass through the, directly
Aquaporins
The movement of water through cell membranes as a biological process
Osmosis
Diffusion of water through selectively permeable membrane where molecules move from area of high concentration to low concentration
Osmosis
Cell membrane in which water molecules are being diffused
Osmosis
Cell membrane in which solute molecules are being diffused
Diffusion
The barrier in osmosis is permeable to what
Permeable to water but not sugar
What is the process of osmosis
- there’s more sugar on the right
- concentration of water is low on the right
- the water molecules move across the membrane until equilibrium is reached
- when they become equal on both sides they become isotonic.
“Same strength”
Isotonic
“Above strength”
Hypertonic
“Below strength”
Hypotonic
