how inorganic ions cant be made by body so must be got from diet.
phosphate in phospholipid bi-layer
Na+ K+ in nervous transmission
Ca+ in synapses
Na+ in cotransport of molecules
Fe2+ in haemoglobin
CO2 producing acidic H+ leads to releae of more O2 and Haemoglobin as a buffer:
CO2 + H2O --> H+ + HCO3- and HbO2 + H+ --> HbH+ + O2
Hydrogen Phosophate ions as a buffer - homeostasis
HP042- + H+ --> H2PO4-
H+ in light dependent photosynethesis, photolysis NADP+ + H+ + 2e- --> NADPH etc.
Phosphorus in ATP
Sulphur - disulphide bonds
Na+ in water regulation in kidneys, Related to conditions and diet.
Pottassium for muscle contractions - hypokalemia - diet
About chemiosynthesis in deep sea vent bacteria - hydrogen sulfide - ecosystem, food chain etc..
Really enjoyed that actually.
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AQA A biology synoptic... watch
- 24-06-2005 17:00
- 24-06-2005 17:02
Bah i realise now if id av thought bout it, the inorganic ions question was the bttr one, but i just went with the bacteria question sob! Didnt realise we cud include all the stuff bout kidneys etc, which im really clued up on thanx to module 6 rather than making up crap bout bacteria
- 24-06-2005 17:12
I only really talked about mod 6. touched on photosynthesis and resp. Totally forgot about phopholipid bilayer and DNA arrgh.
- 24-06-2005 20:55
What did people say about how percentages of protein etc. change when you starve someone? And what about teh formula?
- 25-06-2005 14:11
I said it would decrease because theyd be used as respiratory substrate as less glucose was being digested. For the formula I got a= b x c divided by D, I subsitituted the letters for the mark-release-recapture formula (so glad I read it before i went into the exam lol)!!