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Chewy29
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#401
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#401
(Original post by MLogan)
lol i came out of them exam thinking i roughly got that and ended up getting 43 :|
I knew when I walked out I didnt get the grade I need. The only bright side was after exam biology cheesecake brought in by my teacher after every exam we have.

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Scienceisgood
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#402
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#402
Whoever rights the MS for AQA biology unit 4 needs to be shot, run over, reversed over and shot again.
Followed by a hanging!
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MLogan
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(Original post by Chewy29)
I knew when I walked out I didnt get the grade I need. The only bright side was after exam biology cheesecake brought in by my teacher after every exam we have.

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I really dont know how to tackle the qs 7's :|
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MLogan
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(Original post by Scienceisgood)
Whoever rights the MS for AQA biology unit 4 needs to be shot, run over, reversed over and shot again.
Followed by a hanging!
A bit harsh but true!
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Chewy29
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#405
(Original post by MLogan)
I really dont know how to tackle the qs 7's :|
What do you mean?

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Starlight94
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#406
(Original post by Helloworld_95)
Yes, call them saprophytes instead and that might help prevent you mixing them up
What's the difference?
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emah123
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(Original post by Scienceisgood)
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.
how long have spent on revising unit 4?
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tilownii
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Damn aqa saprophytes or saprobionts or saprobitic ahhhhrg not only do we have do we have worry about hsw but also the damn correct terminology
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DELETED ACCOUNT
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(Original post by Starlight94)
What's the difference between saprobiotic and saprobiontic? Or is it just saprobiontic?

(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.
They're the same thing (I think!)
Its just like saying metabolism/metabolic. Saprobiotic is just the adjective.
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emah123
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(Original post by Chewy29)
I watched they youtube videos by brightstorm 2. Literally so helpful, most of unit 4 and 5 are there.

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where can i find the unit 4 biol videos, i went on there and mainly physics videos came up
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Chewy29
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(Original post by emah123)
where can i find the unit 4 biol videos, i went on there and mainly physics videos came up
Go on the playlists

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jonnyb123
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(Original post by TH4RG3)
Attachment 225005

It sounds like whoever found ATPase originally called it that, and it made ATP, then they found that the reverse could happen, so then they changed the one that created it to ATP synthase, just to distinguish it, but in reality it is the same thing, but seeing as we dont actually need to know it, as a bonus point they put ATPase in the AQA markscheme, so id stick to ATPase, and not try to be clever about it and read to much into it keep it simple for AQA remember, they do it with a lot of things, just stick to markschemes and spec..

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Nice going AQA, just looked at the Jan 2012 mark scheme and they now say ATP synthase for the exact same question... They do accept ATPase though so it really does seem the two can be used interchangeably, or at least when it comes to respiration.

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and here's the one from June 2010...

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hollywils
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(Original post by jonnyb123)
Nice going AQA, just looked at the Jan 2012 mark scheme and they now say ATP synthase for the exact same question... They do accept ATPase though so it really does seem the two can be used interchangeably, or at least when it comes to respiration.

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and here's the one from June 2010...

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Can you please explain the role of ATPase?!


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TH4RG3
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(Original post by Scienceisgood)
Done the last 4 papers. Gonna keep the first few until tomorrow.
The grade boundaries for those are like 40/75 for an A. :eek:
January and June 2010 papers a both pretty rubbish tbh, they complained about jan 2010 as it covered irrelevamt material

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TH4RG3
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(Original post by Scienceisgood)
It is, by far the nicest paper I have seen for unit 4.
How I flopped so badly I will never now.
I thought that too! Im guessing the grade boundaries were really high!!

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TH4RG3
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(Original post by hollywils)
Can you please explain the role of ATPase?!


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All you need to know it does is...

ADP + Pi ---> ATP

When the hydrogen ions (protons) diffuse through them when re-entering the matrix.

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Son234
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Did anyone find June 2011 relatively easy?

I just did it manage to get a very high score

Also with grade boundaries I take them as a pinch of salt

And the question why do humans produce more ATP?

Some of the answers e.g ATP is unstable

I think AQA just hate the idea infact it's their priority to ensure no students are to achieve 75/75 in Biol4





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flyylikejetz
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(Original post by jonnyb123)
Nice going AQA, just looked at the Jan 2012 mark scheme and they now say ATP synthase for the exact same question... They do accept ATPase though so it really does seem the two can be used interchangeably, or at least when it comes to respiration.

Name:  bio4.png
Views: 242
Size:  50.2 KB

and here's the one from June 2010...

Name:  bio pic.png
Views: 174
Size:  23.4 KB
when i was marking my papers i thought that was odd because the two shouldn't be interchangeable because they do different things, like saying light independent and dependent reaction can be interchangeable :/
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TH4RG3
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(Original post by flyylikejetz)
when i was marking my papers i thought that was odd because the two shouldn't be interchangeable because they do different things, like saying light independent and dependent reaction can be interchangeable :/
Read one of my previous posts, it kinda explains why they do it, it should be written in the spec and textbook, its bonus marks, and sources interchange them, so im guessing its a good thing

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TommehBoi
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(Original post by MLogan)
I really dont know how to tackle the qs 7's :|
Basically what you need to do is take a wild stab in the dark at every qustion in question 7; you will probably get the same marks if you take your time and try, but this way you have more time to answer the rest of the paper. Hope this helps
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