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Author Topic: IGCSE Biology Paper 3  (Read 23762 times)

Offline hdbkiwi

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Re: IGCSE Biology Paper 3
« Reply #105 on: June 09, 2009, 12:32:33 pm »
Yes but birds don't have pinna on ear-which can be moved for maximum efficiency in sound detection.
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Offline sweetie

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Re: IGCSE Biology Paper 3
« Reply #106 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  :-*

ppl am i rite?????????/
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Offline aquarian93

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Re: IGCSE Biology Paper 3
« Reply #107 on: June 09, 2009, 12:34:16 pm »
producer has to be the most tho
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Offline cool_dude

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Re: IGCSE Biology Paper 3
« Reply #108 on: June 09, 2009, 12:35:12 pm »
Quote from: examsaresoon on June 09, 2009, 12:28:11 pm
They do have external ears! I have pet birds myself!

"Birds have external ears but they can't be seen. Most birds have their ear holes covered with tiny feathers specially designed to cut down on wind noise while permitting sound waves to pass through."


*i hope i don't sound arrogant*

but the answer seems to be only mammal..
sorry dude..
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Offline abcdef

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Re: IGCSE Biology Paper 3
« Reply #109 on: June 09, 2009, 12:35:54 pm »
how many marks for blood clotting ? i think i got wrong.
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Offline shafiq_92libra

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Re: IGCSE Biology Paper 3
« Reply #110 on: June 09, 2009, 12:36:47 pm »
i wrote dat da plants have to be dehydrated and den weighed i dnt think its ryt ><

birds do not have external ears
da first 3 questions were ez
and da why wud it b more effective for humans to eat da wheat directly i wrote more energy content
less fat content
and more fibre
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Offline shafiq_92libra

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Re: IGCSE Biology Paper 3
« Reply #111 on: June 09, 2009, 12:37:44 pm »
i think da blood clotting was 3 marx
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Offline cool_dude

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Re: IGCSE Biology Paper 3
« Reply #112 on: June 09, 2009, 12:38:11 pm »
Quote from: abcdef on June 09, 2009, 12:35:54 pm
how many marks for blood clotting ? i think i got wrong.

i think 3/4..
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Offline shafiq_92libra

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Re: IGCSE Biology Paper 3
« Reply #113 on: June 09, 2009, 12:38:37 pm »
forda calculations i got 19% and x2000
wat did yu guys get??
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Offline girl_92

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Re: IGCSE Biology Paper 3
« Reply #114 on: June 09, 2009, 12:39:48 pm »
wht was the blood clottin thing exactly
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some people sleep to dream while othrs wakeup to follow dem im the second type how abt u

Offline cool_dude

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Re: IGCSE Biology Paper 3
« Reply #115 on: June 09, 2009, 12:40:21 pm »
Quote from: shafiq_92libra on June 09, 2009, 12:38:37 pm
forda calculations i got 19% and x2000
wat did yu guys get??

i think it was 200...
anybody??...12/0.06...
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Offline Devina

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Re: IGCSE Biology Paper 3
« Reply #116 on: June 09, 2009, 12:41:18 pm »
Quote from: madee on June 09, 2009, 12:39:48 pm
wht was the blood clottin thing exactly


ana mafi maluum ;(  but i guess u had to write about the prothrombin which is then converted to thrombin again some thing happens and then it turns into soluble fibrinogen and then in the end its insoluble fibrin !
« Last Edit: June 09, 2009, 12:44:25 pm by Devina »
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Offline girl_92

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Re: IGCSE Biology Paper 3
« Reply #117 on: June 09, 2009, 12:41:32 pm »
Quote from: cool_dude on June 09, 2009, 12:40:21 pm
Quote from: shafiq_92libra on June 09, 2009, 12:38:37 pm
forda calculations i got 19% and x2000
wat did yu guys get??

i think it was 200...
anybody??...12/0.06...
yea dude i did the same but it was 0.06mm
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some people sleep to dream while othrs wakeup to follow dem im the second type how abt u

Offline aquarian93

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Re: IGCSE Biology Paper 3
« Reply #118 on: June 09, 2009, 12:41:47 pm »
Quote from: madee on June 09, 2009, 12:39:48 pm
wht was the blood clottin thing exactly

i sed when there's a cut, platelets and damaged tissues secrete chemicals which converts a soluble protein fibrinogen to insoluble fibrin which forms fibres, and a mesh which forms a clot.
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Offline sanity_master

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Re: IGCSE Biology Paper 3
« Reply #119 on: June 09, 2009, 12:42:04 pm »
the calculations are.....

19%
x2000
6.3
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