Diffusion
Movement of molecules from high concentration to low concentration is called
Diffusion
Osmosis is the diffusion of ________ through a selectively permeable membrane.
Water
A solution is a mixture of two parts: ________ and ________.
Solvent and solute
A solution with more solute and less water than the cell is called ________.
Hypertonic
After eating salty chips, your cells lose water and shrink. What type of solution?
Hypertonic
Does diffusion require energy?
No
Water moves from ________ water to ________ water.
More water → less water
The solvent is the ________ that does the dissolving.
Liquid (usually water)
In a hypertonic solution, water moves ________ the cell.
Out of
A gummy bear grows in pure water overnight. What type of solution?
Hypotonic
What happens when molecules become evenly spread out?
They reach equilibrium.
Does osmosis require energy?
No
The solute is the ________ that gets dissolved.
Substance (like salt or sugar)
A solution with less solute and more water than the cell is called ________.
Hypotonic
An IV fluid that keeps cells the same size is what type of solution?
Isotonic
Give one real-life example of diffusion.
Perfume spreading in a room.
Why is osmosis important to cells?
It helps maintain water balance.
If there is more solute, is there more or less water?
Less water
In a hypotonic solution, water moves ________ the cell.
Into
If a plant is placed in salt water, what happens to its cells?
They shrink and wilt (hypertonic).
What type of transport includes diffusion?
Passive transport.
What part of the cell controls osmosis?
The selectively permeable cell membrane.
Why do cells react to the amount of solute in their surroundings?
Because it affects how water moves in or out of the cell.
A solution with equal solute and water is called ________.
Isotonic
If a red blood cell bursts from too much water entering, what solution caused it?
Hypotonic