Osmosis Flashcards
(25 cards)
What is osmosis?
The movement of water molecules across a selectively permeable membrane from a region of lower solute concentration to a region of higher solute concentration.
True or False: Osmosis requires energy input.
False
Fill in the blank: Osmosis is a type of __________ transport.
passive
What type of membrane is involved in osmosis?
Selectively permeable membrane
Which direction do water molecules move during osmosis?
From low solute concentration to high solute concentration
What is the primary substance that moves during osmosis?
Water
Define hypertonic solution.
A solution with a higher solute concentration compared to another solution.
Define hypotonic solution.
A solution with a lower solute concentration compared to another solution.
Define isotonic solution.
A solution with equal solute concentration compared to another solution.
What happens to a cell in a hypertonic solution?
The cell shrinks as water moves out of it.
What happens to a cell in a hypotonic solution?
The cell swells and may burst as water moves into it.
What is the term for the pressure exerted by water inside a plant cell?
Turgor pressure
True or False: Osmosis can occur in both living and non-living systems.
True
What is the importance of osmosis in plants?
It helps maintain turgor pressure, which keeps plants rigid and upright.
In osmosis, what does the term ‘solute’ refer to?
The substance dissolved in a solvent, affecting the concentration.
What is the process called when a cell loses water through osmosis?
Crenation
What is the outcome of osmosis in red blood cells placed in a hypotonic solution?
They swell and may burst (hemolysis).
Fill in the blank: The __________ is the ratio of solute to solvent in a solution.
concentration
What role does osmosis play in kidney function?
It helps regulate water balance and solute concentration in the blood.
What is osmotic pressure?
The pressure required to prevent the flow of water into a solution via osmosis.
True or False: Osmosis only occurs in water.
True
What is a common example of osmosis in everyday life?
The process of pickling vegetables.
How does temperature affect the rate of osmosis?
Higher temperatures increase the rate of osmosis due to increased molecular movement.
What happens to plant cells in an isotonic solution?
There is no net movement of water, and cells remain in a flaccid state.
