Movement of substances in living systems - introduction to
diffusion, Fick's Law, osmosis, transport and active transport
Doc Brown's GCSE level biology exam revision study notes
See also Surface
exchange of substances in
animal organisms
and
Transport systems in plants
Sub-index for this
section on transport
of substances in living organisms
(1)
Introduction to diffusion and demonstration experiments
and
its importance in biology
(2)
A particle model and factors
affecting the rate of diffusion and Fick's Law of diffusion
(3)
The action of
partially permeable cell
membranes - selective diffusion and examples
(4)
Osmosis - examples and explanation
(5)
Some details of examples of osmotic action in individual animal or plant cell types
(6)
Osmosis experiments - demonstrations of osmotic action
(7)
Active transport - explanation of why needed and examples
explained
(8)
A quick comparison of diffusion, osmosis and active transport
See also on other pages:
Detailed notes on
transport systems in plants
The human circulatory systems
Examples of surfaces for the exchange of substances in
animal organisms
Enzymes - section on
human digestion, metabolism and synthesis
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