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Tee Logan x
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#381
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#381
(Original post by MLogan)
I was in the exact same situation as you! I thought the jan 13 paper went quite good but then on results day find out i got a C! Called my paper back to see i lost 13 marks on QS7 HSW :|
omg me too! life sucks
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saaaarn
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#382
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#382
(Original post by MLogan)
I was in the exact same situation as you! I thought the jan 13 paper went quite good but then on results day find out i got a C! Called my paper back to see i lost 13 marks on QS7 HSW :|
same!!!! I really thought I'd got an A in Jan13. Stupid tadpoles :rolleyes:
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MLogan
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#383
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(Original post by Starlight94)
Is this correct for nitrogen cycle? i'm finding it so hard to remember

Saprobionts break down nitrogen contaning compounds by secreting enzymes (extracellular digestion). Ammonium is converted to nitrite and then nitrate by nitrification. Nitrates are taken up by roots by active transport, ATP is required.

Where does denitrification come into this process? Confused
Denitrfying bacteria will only work in anerobic conditions, so denitrfication only occurs when there is a lack of oxygen. Denitrifying bacteria will respire anerobically and convert nitrate ions into Nitrogen gas.

Also in the Nitrogen cycle dont forget to mention, Ammonia is OXIDISED into Nitrite ions and further OXIDISED into Nitrate ions by Nitrifying bacteria.
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Scienceisgood
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(Original post by Starlight94)
Also I struggle with the carbon cycle 5 markers about how carbon can be taken up my plants...?
Anyone know what to write for 5 marks but not too complicated? :/
Question: How is carbon dioxide converted into organic substances?

I think the closest answer I can find to that is attached (last question in MS)
Attached files
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MLogan
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#385
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(Original post by Tee Logan x)
omg me too! life sucks
(Original post by saaaarn)
same!!!! I really thought I'd got an A in Jan13. Stupid tadpoles :rolleyes:
I Know! Lets just hope we don't get another one of those types of questions 7's again!
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Scienceisgood
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Guys, would I get penalised for saying Saprobiotes rather than Saprbiontes or whatever they're called. I am so used to writing "Saprobiotes" - the small organisms responsible for breaking down dead organisms.
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Scienceisgood
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#387
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(Original post by saaaarn)
same!!!! I really thought i'd got an a in jan13. Stupid tadpoles :rolleyes:
hsw sucks!!!!!!
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MLogan
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(Original post by Starlight94)
Also I struggle with the carbon cycle 5 markers about how carbon can be taken up my plants...?
Anyone know what to write for 5 marks but not too complicated? :/
(1) Carbon containing compounds are broken down by saprobiotic organisms
(2)Carry out extracellular digestion
(3)Respire product of digestion
(4)Release CO2
(5)Used up plants during photosynthesis - light independent reaction
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Scienceisgood
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#389
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#389
Guy, if it asks for an example of a saprobiote, will mushrooms be ok?
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Starlight94
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#390
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What's the difference between saprobiotic and saprobiontic? Or is it just saprobiontic?
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Chewy29
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#391
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JUST GOT 62 ON JAN 13 PAPER!!

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Scienceisgood
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(Original post by Starlight94)
What's the difference between saprobiotic and saprobiontic? Or is it just saprobiontic?
None, I just say saprobiote because it is how I say it, and ironically, how I write it.
Will it affect me in the exam?
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Scienceisgood
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(Original post by Chewy29)
JUST GOT 62 ON JAN 13 PAPER!!

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\How harsh was your marking?...
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emah123
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#394
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how much revision have people done? i have a chem 5 exam Wednesday so ive been focussing more on that and havent done much
can anyone who's doing this paper as a retake tell me how they revised and please give me some tips?? really starting to panic now!!
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Scienceisgood
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(Original post by emah123)
how much revision have people done? i have a chem 5 exam Wednesday so ive been focussing more on that and havent done much
can anyone who's doing this paper as a retake tell me how they revised and please give me some tips?? really starting to panic now!!
Well, you can do all of respiration, photosynthesis and nitrogen cycle in a day. Carbon cycle is common sense if you know photosynthesis and factors affecting it.
Definitions could take you about 4 hours at most.
I think it is certainly possible to revise unit 4 in a day pending on how good your memory is.
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Chewy29
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#396
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(Original post by Scienceisgood)
\How harsh was your marking?...
Quite harsh. I have 4 maybe's that I didnt include in the final mark.

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Helloworld_95
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#397
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(Original post by Scienceisgood)
Guys, would I get penalised for saying Saprobiotes rather than Saprbiontes or whatever they're called. I am so used to writing "Saprobiotes" - the small organisms responsible for breaking down dead organisms.
Yes, call them saprophytes instead and that might help prevent you mixing them up
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Tee Logan x
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(Original post by MLogan)
I Know! Lets just hope we don't get another one of those types of questions 7's again!
Yeah totally with u on that
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Chewy29
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#399
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#399
(Original post by emah123)
how much revision have people done? i have a chem 5 exam Wednesday so ive been focussing more on that and havent done much
can anyone who's doing this paper as a retake tell me how they revised and please give me some tips?? really starting to panic now!!
I watched they youtube videos by brightstorm 2. Literally so helpful, most of unit 4 and 5 are there.

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MLogan
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(Original post by Chewy29)
JUST GOT 62 ON JAN 13 PAPER!!

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lol i came out of them exam thinking i roughly got that and ended up getting 43 :|
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