PopsA
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Hi,

Anyone know what practicals are likely to come up on Friday's Biology Paper 2? I'm doing the IGCSE.
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LotusLotus
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thailie
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Im also doing it. Here is list of things likely to come up in a Paper 2 exam, taken from my CGP iGCSE revision guide:

* how pH affects enzymes
* turgidity in plant cells
* balanced diet, energy requirements
* experiment to calculate energy content from food (calorimetry)
* phloem and xylem
* experiment investigating CO2 production using an indicator (hydrogen carbonate solution) and how you can use the result to show differences in net gas exchange in plants
* how heat produced from respiration can be measured (germinating peas experiment)
* how net exchange of gases in and out of a leaf depends on light intensity
* function of platelets in blood clotting
* how vaccinations protect body from further infection
* the iris reflex
* how the lens focuses on near and distant objects
* short sightedness and longsightedness and how to correct this using contact lens
* the skins role in maintaining constant body temperature
* germination of seeds
* role of placenta and amniotic fluid
* codominance - where both alleles are equally dominant
* the water cycle
* the nitrogen cycle
* eutrophication
* bacteria's role in making beer and yoghurt
* industrial fermenters
* transgenic - organism containing alleles from another species
* cloning advantages and disadvantages

*
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