Qualification > Sciences
IGCSE Biology Paper 3
shafiq_92libra:
chem was definately better dan bio for me ><
hdbkiwi:
--- Quote from: shafiq_92libra on June 09, 2009, 11:52:04 am ---dey dint ask wich enzyme was used
dey asked how blood clotting happend and dey sed an enzyme is used
i wrwote about platelets clumping and dey contai fibrinogen wich is changed into fibrin by an enzyme wich hardens and froms a blood clot
--- End quote ---
oh I just did the platelets part-good job for the fibrinogen part that's full marks for you^^
hdbkiwi:
Amphibians are the only ones that have smooth skin
Fish and reptiles are the only ones with scales (reptile-dry; fish-wet)
Birds and Mammals have No scales-birds have feathers and mammals have no feathers
Mammals are the only ones that have mammary glands (hence the name mammary :P ) and external ears.
sheshee:
heyy yayyy i got the dry mass one correct
and yeah abt the enzyme bacteria thing i ddnt know wt to write so i just wrote that we put it in the fermenter feedstock then filtration hpoes its correct
yeah one more thing how did u guys do in the very last question abt energy? uhh god i ws solving nd then i saw a question abt acid i ws woow wt acid rain has to do with energy ?
sweetie:
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 :-*
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