Chapter 6.3 Active And Passive Transport Flashcards
(23 cards)
What kind of membrane does osmosis have
Selectively permeable membrane
Hat can travel through osmosis
Water only
Does passive transport use energy
No
Does active transport use energy
Yes
How do things flow in diffusion and osmosis
High to low
Which best describes the structure of a cell’s plasma membrane?
a. proteins sandwiched between two layers of phospholipid
b. proteins embedded in two layers of phospholipid
c. phospholipids sandwiched between two layers of proteins
d. a layer of protein coating two layers of phospholipids
B
In a phospholipid, the head is…
Hydrophilic
In a phospholipid, the tail is
Hydrophobic
Hydrophilic means
It attracts to water
Hydrophobic means…
It is afraid of water
What is facilitated diffusion
The process of creating a pathway for molecules to pass
What happens when you put an animal speck into a hypotonic solution
The animal cell will swell up and maybe eve pop, this is because a hypotonic solution has a lower solute concentration
How do things flow in active transport
Low to high
If you put a potato in a salt solution what would happen?
It would shrivel up and become soft
If you put a potato in distilled water what would happen?
The water would be absorbed and the potato would get harder and larger
What is the difference between endocytosis and exocytosis?
Endocytosis is when something comes into the cell and exocytosis is when something exits the cell
How does the vesicle transport large molecules out of the cell?
The vesicle fuses with the plasma membrane and uses exocytosis to transport it out of the cell.
What is hypertonic
Higher concentration
What is hypotonic
Lower concentration
What is isotonic
Equal concentration
Sugar molecules can’t cross the membrane in diffusion or osmosis?
Osmosis, anything can cross the membrane in diffusion
What is a transport protein
A protein that helps move things across the membrane
What do phospholipid molecules do
They are found in the bilayer and help preform the cells functions, enzymes is an example
