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Cell biology
Osmosis
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Cards (15)
What is osmosis?
The
diffusion
of water through a membrane
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What is the direction of water movement in osmosis?
From
dilute
to
concentrated
solution
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What type of membrane allows osmosis to occur?
Partially permeable membrane
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What happens to water in a dilute sugar solution?
It has a high
concentration
of water
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What happens in a concentrated sugar solution?
It has a low
concentration
of
water
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What does a partially permeable membrane allow?
Some
molecules
to pass through
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What happens to water when a cell is placed in water?
Water moves into the cell by
osmosis
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What effect does osmosis have on an animal cell in water?
The cell expands and may
burst
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What happens to an animal cell in a concentrated solution?
Water moves out, causing the cell to
shrink
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What happens to a plant cell in water?
Water moves in, causing the cell to
expand
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Why doesn't a plant cell burst when it expands in water?
The
cell wall
prevents bursting
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What term describes a swollen plant cell?
Turgid
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What happens to a plant cell in a concentrated solution?
Water
moves
out
, causing the
cell
to
shrink
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What term describes a shrunk plant cell?
Flaccid
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What are the effects of osmosis on animal and plant cells?
Animal cells:
In
water
: expand and may burst
In
concentrated solution
: shrink
Plant cells:
In water: expand (
turgid
)
In concentrated solution: shrink (
flaccid
)
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