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AQA BIOL5 ~ 17th June 2013 ~ A2 Biology

What sort of stuff can you talk about importance of proteins?
I cant think of:
-Enzymres (eg. resp & photo)
- Immunity
-Some hormones
-muscle contraction
...

what else? Thanks

Collogen(out of specifcation)

and a number of other hormones thyroxine/renin ect. Think thats most of it.

Hormones will cover 3/4 points!

Reply 1521

lifeisgood2012

Original post by feelinginfinite

Can someone talk some sense in to me please? I'm usually pretty good at revising, on track to get a B in biology (only need to get about 60 raw marks/ 75ums to get it), but with so many other exams I've put biology revision off for over a week now and spent time revising the others :confused:

How long would it take to cover section 9 - 16 in detail, as well as doing 2 past papers? My last exam before biology is the 7th so I'd have 10 days... Is that enough or should I revise sooner (despite having an exam on Monday so should be revising for that). I'm so stuck with all this stress :confused:

Ten days of full biology revesion is more than enough..... its just getting your head around all the theroy... there isnt much application questions soo just make sure you understand and can recall everything

Reply 1522

feelinginfinite

6

Original post by lifeisgood2012

Ten days of full biology revesion is more than enough..... its just getting your head around all the theroy... there isnt much application questions soo just make sure you understand and can recall everything

Okay you've calmed me down a bit since I posted that, thanks, have a +1 :redface:

I think I'd be able to go through section 9 - 11 in the first day, sections 12 - 14 the second day, sections 15 - 16 the third day, which would leave me a full 7 days to do 2 past papers, mark them, see where I went wrong, repeat. Ok I'm calmer now, just have to get my first exams over with before I worry about this one! :redface:

Reply 1523

DELETED ACCOUNT

15

Original post by feelinginfinite

Okay you've calmed me down a bit since I posted that, thanks, have a +1 :redface:

I think I'd be able to go through section 9 - 11 in the first day, sections 12 - 14 the second day, sections 15 - 16 the third day, which would leave me a full 7 days to do 2 past papers, mark them, see where I went wrong, repeat. Ok I'm calmer now, just have to get my first exams over with before I worry about this one! :redface:

Don't forget the essay. :wink:

and just learn a little fact every day which is outside of the spec.

Reply 1524

lifeisgood2012

Original post by feelinginfinite

Okay you've calmed me down a bit since I posted that, thanks, have a +1 :redface:

I think I'd be able to go through section 9 - 11 in the first day, sections 12 - 14 the second day, sections 15 - 16 the third day, which would leave me a full 7 days to do 2 past papers, mark them, see where I went wrong, repeat. Ok I'm calmer now, just have to get my first exams over with before I worry about this one! :redface:

exactly... with papers yhh... if your running out of time.. i will adice you to just go thru the paper real quickly and the questions you get wrong... learn the answer for it... however you have like 7 days for doing past papers so you got nothing to worry abt ther.... and also i would advice you to spent 2-3 days on biol1,2,4 for the essay cos if you know your stuff then its easy 20 mark

Reply 1525

feelinginfinite

6

Original post by frogs r everywhere

Don't forget the essay. :wink:

and just learn a little fact every day which is outside of the spec.

Original post by lifeisgood2012

exactly... with papers yhh... if your running out of time.. i will adice you to just go thru the paper real quickly and the questions you get wrong... learn the answer for it... however you have like 7 days for doing past papers so you got nothing to worry abt ther.... and also i would advice you to spent 2-3 days on biol1,2,4 for the essay cos if you know your stuff then its easy 20 mark

Thanks, feeling much better now :tongue:

On my mock I got 22/25 on the essay (but I think my teacher marked it a bit higher since I didn't include anything from outside the specification on). Plus it was the mock with the essay on shapes which I found okay, but I'll definitely look over the other units. I think the main ones are respiration and photosynthesis that I'll learn in detail again, then I'll briefly look at the nitrogen/carbon cycles, and briefly on meiosis/mitosis. I've saw the list from AQA of old/possible titles so I'll try plan some of those too, thanks again :smile:

Reply 1526

BetsieB

In my opinion, this exam is too hard. Even if you know the stuff, you have to work out what info they actually want first. The questions are often really complicated, it is trying to trick you out of marks. Plus the fact if you put a paragraph wrong in the essay, they don't ignore it but instead drop your mark really annoys me!!

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Reply 1527

DavidYorkshireFTW

18

Just out of interest guys, if say, we used information from a human biology textbook, such as for a disease essay, and wrote about Salmonella and Human Immunodeficiency Virus (HIV), does that count as out of the syllabus information, or does it have to be information from other sources?
Might be a silly question, but i'd just like to check if it's ok before I borrow my friend Human Biology textbook :smile:

Thank you

Reply 1528

Gnome :)

2

Original post by DavidYorkshireFTW

Just out of interest guys, if say, we used information from a human biology textbook, such as for a disease essay, and wrote about Salmonella and Human Immunodeficiency Virus (HIV), does that count as out of the syllabus information, or does it have to be information from other sources?
Might be a silly question, but i'd just like to check if it's ok before I borrow my friend Human Biology textbook :smile:

Thank you

Anything that's not included in our syllabus is outside information :smile:

Reply 1529

MLogan

Original post by master y

What sort of stuff can you talk about importance of proteins?
I cant think of:
-Enzymres (eg. resp & photo)
- Immunity
-Some hormones
-muscle contraction
...

what else? Thanks

-transport - channel proteins
-pathogens? Antigens and there specific binding sites
-Homeostasis - insulin receptors. But I guess that comes under hormones I guess.

Reply 1530

sahjan

12

Sorry if this question has been asked before on this thread, but does anyone know where I can find the January past papers for BIOL5? The AQA website only seems to have the June past papers, plus a specimen paper.

Reply 1531

BetsieB

Original post by sahjan

Sorry if this question has been asked before on this thread, but does anyone know where I can find the January past papers for BIOL5? The AQA website only seems to have the June past papers, plus a specimen paper.

There are no Jan papers. Its a sumner exam only.

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Reply 1532

Beth_L_G

10

Original post by sahjan

Sorry if this question has been asked before on this thread, but does anyone know where I can find the January past papers for BIOL5? The AQA website only seems to have the June past papers, plus a specimen paper.

The exam is only sat in June. There aren't any jan ones unfortunately :/

Reply 1533

sahjan

12

Original post by Beth_L_G

The exam is only sat in June. There aren't any jan ones unfortunately :/

Oh...that's strange. So there's literally only 4 past papers we can do :redface:

I need all the practise I can get :frown:

Reply 1534

DELETED ACCOUNT

15

Just did the specimen paper. Did anyone found that more challenging than the real papers?
(and much more boring to complete!) Might just be me! :smile:

Reply 1535

starfish232

Original post by JoshL123

Is anyone else struggling to understand the Sanger technique/ DNA sequencing? I think I understand the core of it but the gritty details are mehh :s-smilie:

So The Sanger method was created by Sanger to help sequence DNA sequences. The method involves using modified nucleotides known as 'terminators'. So for example if have the basesequence TCGAGCT and you add the terminator 'A' to it then you have two points at which the modified terminator would join to complementary bit of the sequence and prevent any further nucleotides adding to the sequence. In this case, you can get T as A would join to the first base and you can get TCGAGC as an A can join at the very end of the sequence.

So sanger does this with DNA in four tubes with one of the four terminators added to each tube and then allows the terminators to do their thing and then the DNA fragments formed in each tube are separated by gel electrophrohesis. You do gel electrophroesis for each tube and on the picture of it you would usually have four columns of DNA bands with each column representing the terminator used. You can then sequence DNA by starting from the bottom so going from the smallest fragment to the largest and this will allow you to figure out the sequence.

I think this can't be done for really large dna sequences it would be too dificult i think but i'm not entirely sure about this.

I hope this helps. Not the best explainer..

Reply 1536

erniiee

13

Does anyone happen to have a list of the old spec essay titles?

Reply 1537

master y

12

just out of interest, how many ums do people need to get an A?

Reply 1538

mulac1

In the nelson thornes textbook it contradicts itself on page 197 it says that ectotherms can generate metabolic heat to gain heat - but I thought endotherms metabolic rate was lower at lower temperatures ...