biology unit 3
unit 3
- Created by: 10carterj
- Created on: 21-01-15 18:10
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- biology
- movement of molecules in and out of cells
- osmosis
- movement of water only
- with the concentration gradient
- diffusion
- gases and liquids
- with the concentration gradient
- movement of water only
- diffusion
- gases and liquids
- with the concentration gradient
- active transport
- movement of all states
- requires energy
- atp
- against the concentration gradient
- requires energy
- osmosis
- movement of water only
- with the concentration gradient
- movement of water only
- movement of all states
- osmosis
- transport systems in plants and animals
- animals
- the blood system
- plasma
- transport liquid
- white blood cells
- immune system, makes the antibodies and the anti toxins
- platelets
- causes the blood to clot at wounds
- plasma
- the blood system
- animals
- xylem
- transports the food from the leaves to the rest of the plant
- phloem
- transports food and solutes to the roots
- xylem
- animals
- homeostasis
- the control system
- controls:
- water
- ion content
- temp
- blood sugar
- insulin and glucagon
- insulin=high
- glucagon=low
- makes starch
- starch separated by glycagen
- makes starch
- insulin and glucagon
- thermoregulatory centre
- temp
- pancreas
- blood sugar
- insulin and glucagon
- insulin=high
- glucagon=low
- makes starch
- starch separated by glycagen
- makes starch
- insulin and glucagon
- blood sugar
- controls:
- controls waste
- co2
- urea
- the control system
- humans and their environment
- biofuels
- sustainable source of power
- made from sustainable sources
- negatives
- could cause a food shortage due to the farmland the sugar cane would take up
- doesn't provide as much power as the fossil fuels
- waste from human activities
- land fill and recycling
- deforestation
- cutting down trees which releases the CO2 stored there
- food production
- efficiency of food production
- battery/factory farming
- efficiency of food production
- biofuels
- movement of molecules in and out of cells
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