Exchange Across Cell Membrane

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What is diffusion?
Net movement of particles from an area of higher concentration to lower concentration
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What is osmosis? and what happens with Hypotonic, Hypertonic, Isotonic?
Osmosis is the net movement of water molecules across a partially permeable membrane from an area of higher water potential to low. Hyper = lower outside cell Hypo = Higher outside Iso = Same
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What happens in facilliated diffusion?
No energy used to transport particles, channel proteins water transport ions (by gradient) & can change permebility to certain ions / carrier protein larger molecules (by gradient)
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What happens in active transport?
Uses ATP -> Move against concentration gradient (protein pump) molecule binds to protein. Co-transport 2 things must be binded to transport (sodium/glucose) etc
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What would be the effect on concentration against rate of transport on diffusion, facillated diffusion, active transport
active transport - straight line not affected , diffusion - diagonal line directly proportional , facilltated diffusion - rises then then equilibirums (max no. of transport proteins.
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Card 2

Front

What is osmosis? and what happens with Hypotonic, Hypertonic, Isotonic?

Back

Osmosis is the net movement of water molecules across a partially permeable membrane from an area of higher water potential to low. Hyper = lower outside cell Hypo = Higher outside Iso = Same

Card 3

Front

What happens in facilliated diffusion?

Back

Preview of the front of card 3

Card 4

Front

What happens in active transport?

Back

Preview of the front of card 4

Card 5

Front

What would be the effect on concentration against rate of transport on diffusion, facillated diffusion, active transport

Back

Preview of the front of card 5

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