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Paper 1
cell biology
osmosis
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Created by
Elizabeth Burr
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Cards (12)
What is diffusion?
Net movement of
particles
from high to low
concentration
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What is osmosis?
Diffusion of
water molecules
across a
membrane
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What is the definition of osmosis?
Net movement of water from high to low
concentration
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What does water concentration refer to?
Amount
of water compared to
dissolved
solutes
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What are solutes in the context of water concentration?
Substances like sugars or salts
dissolved
in water
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How does solute concentration affect water concentration?
Higher
solute concentration means
lower
water concentration
Lower solute concentration means
higher
water concentration
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If one beaker has one solute particle and another has three, which has higher solute concentration?
The
beaker
with
three
solute
particles
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What determines the concentration of water in a solution?
The
proportion
of water compared to solutes
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How does osmosis apply to cells?
Water moves from high to low
concentration
across membranes
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What is found inside the cell in the osmosis example?
Lots of water particles and some
solute
particles
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What is the water concentration outside the cell in the example?
Higher water concentration with few
solutes
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What happens to water particles in the osmosis process described?
They
diffuse
into the cell from outside
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