General
The four types of organisms have a cell wall
Plants, Bacteria, Protus, and Fungi
In a hypertonic situation, there is a high solute and low water concentration outside a cell. Water moves ___ the cell.
Outside
Which type of cellular transport goes against the concentration gradient?
Active transport
What is osmosis?
When water is diffusing across the cell membrane.
What is the cell membrane mainly made of?
Phospholipids
Diffusion moves molecules from a ____ concentration to a ___ concentration.
High to low
What happens to plants and animal cells in a hypertonic solution?
They shrivel up
What energy molecule helps active transport happen?
ATP
What concentration gradient does osmosis follow?
High to low
Two
True or False: after equilibrium is reached, molecules do not move anymore.
False
In an isotonic solution, there is an ___ solute and water concentration outside and inside a cell.
Equal
What happens to the channel protein when ATP binds to it?
Does water pass directly through the membrane?
Yes
The head
In the Na+ K+ pump, ___ ions of sodium go through first. Then, ___ ions of potassium follow.
+ and +
Do plants or animal cells do better in an isotonic solution?
Animals
When an ion binds to the channel protein what happens to the shape of the protein?
The protein encloses on the ion and then pushes it into the cell.
Is an energy sources needed for osmosis?
No
What is it called when something doesn't like water? (like the tails in the phospholipids)
Hydrophobic
Do plants or animals do better in a hypotonic solution.
Plants
In hypotonic solution, there is a low solute and high water concentration outside a cell. Water moves ___ the cell.
Inside
In facilitated diffusion what helps large molecules pass through the cell membrane?
transport/ channel protien
How is osmosis different from diffusion?
Osmosis is only water, diffusion can be any molecule.
Why is the cell membrane selectively permeable?
Because it allows some substances to pass through but not others.