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8348361
2.D) Movement of substances into and out of cells
Description
IGCSE Biology Mind Map on 2.D) Movement of substances into and out of cells, created by Edward Cooke on 30/03/2017.
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biology
igcse
Mind Map by
Edward Cooke
, updated more than 1 year ago
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Created by
Edward Cooke
over 7 years ago
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Resource summary
2.D) Movement of substances into and out of cells
3. Active Transport
goes against concentration gradient
protien carriers in cell membrane
Higher/lower concentration gradient
1. Diffusion
cell membrane permeable to a substance
example oxygen and carbon dioxide
experiment: ink moving throughout water
2. Osmosis
diffusion with water molecules
diluted molecules have more kinetic energy to move
experiment: pure water against salty water carrots
turgid cells
cells full of water
supports plants
Factors affecting movment
1. surface area : volume
flatter means more transport
2. temperature
changes rate of movement
3. concentration gradient
higer to lower
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