Qualification > Sciences
IGCSE Biology Paper 3
sanity_master:
keep in mind that there r variants and answeres maybe different
hdbkiwi:
--- Quote from: hash094 on June 09, 2009, 12:45:44 pm ---i also wrote the same answer for blood clotting, but u need to mention which enzyme converts fibrinogen to fibrin it is thrombin!
i hope u wrote it because it is important!
--- End quote ---
Lol well now I know-thanks for the knowledge mate +rep^^ :D
hdbkiwi:
--- Quote from: sanity_master on June 09, 2009, 12:46:09 pm ---keep in mind that there r variants and answeres maybe different
--- End quote ---
yeah-there's a bio variant 1 topic-lets discuss variant 1 there?
girl_92:
--- Quote from: cool_dude on June 09, 2009, 12:45:55 pm ---
--- Quote from: madee on June 09, 2009, 12:39:48 pm ---wht was the blood clottin thing exactly
--- End quote ---
in blood plasma,there is soluble protein called fibrinogen. the chemical releases from platelets and the damage tissue set off a chain, causes fibrinogen changes into fibrin.
fibrin is insoluble. it forms fibers. these fibres form a mesh across the wound. red blood cells and platelets will trap in tangle of fibrin fibres, forming blood clot.
--- End quote ---
Thanks
sweetie:
--- Quote from: notty_me on June 09, 2009, 12:33:29 pm ---
--- Quote from: notty_me on June 09, 2009, 12:03:20 pm ---hey guys,
4 da animal feed que. wasnt da energy in feed more dan energy in wheat?????
but in da que. dey said 'why is da energy in feed less???
soooooooooo >:(
plz help :-*
--- End quote ---
ppl am i rite?????????/
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