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AQA AS Biology unit 1 25th May 2010

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veeebz

there is loads of stuff that hasnt come up on previous papers and may come up 2moro, does anyone have a clue as to what may come up and i hate immunity and disease and that seems most likely atm.....
thanks

I've got a feeling cholera is going to come up, i'm not sure why :s-smilie:

Reply 61

Unknown-User

I_Need_To_Revise

Can someone please explain how starch is digested through the body and also the absorption of monosaccharides...Thanks

Salivary Amylase in mouth hydrolyses Starch into maltose

Pushed down oesophagus to Stomach, where acidic conditions denature enzymes, preventing further hydrolysis of Starch

Moves into Small Intestine where alkaline salts are produced to keep PH at neutral. Pancreatic juice mixed with remaining starch, which contains Pancreatic amylase, which hydrolyses remaining starch into Maltose

Further along the small intestine, epithelial lining produces Maltase which hydrolysis Maltose into Alpha-Glucose

Absorbed into blood via diffusion and Co-Transport

Reply 62

INeedToRevise

Unknown-User

thanks

good description- very helpful

Reply 63

CHEM1STRY

I_Need_To_Revise

thanks

good description- very helpful

However make sure you put hydrolyses glycosidic bonds which is worth a mark

Reply 64

LettersFromTheSky

Unknown-User

And so Polyclonal Antibodies are antibodies produced from different B Cells? And all the Polyclonal antibodies are different right?

Does anyone know if the Production of Monoclonal antibodies has come up in the New Spec papers yet? Could be one of the 5 markers at the end of the paper if it hasn't come up...

Monoclonal antibodies came up last year I think, and did in jan 2010 too.

Anyway, best of luck to everyone taking this exam, I'm not looking forward to it at all :frown:

Reply 65

hallie.x

in theory i understand the biolgy behind everything
but AQA's stupid questions confuse me

HARDCORE REVISION TONIGHT!

Reply 66

Unknown-User

LettersFromTheSky

Monoclonal antibodies came up last year I think, and did in jan 2010 too.

Anyway, best of luck to everyone taking this exam, I'm not looking forward to it at all :frown:

Hmm, hopefully they won't ask anything on it then :smile:

Then again, if one of the 5 markers at the end involve production of monoclonal antibodies, I may actually know it as i'll be revising it for a quite a while tonight :yep:

Reply 67

INeedToRevise

CHEM1STRY

However make sure you put hydrolyses glycosidic bonds which is worth a mark

kk kool

Reply 68

INeedToRevise

Anyone have any guesses on what the 5 markers will be at the end?
In jan 2010 it was on the cardiac cycle and i think myocardial infarction...

Reply 69

TwilightKnight

Annnnd finished.

Whoo.

Good luck everyone, I've got about 6 hours of exam past papers to do before sleepy time.

Reply 70

Tw1x

Please help me :frown:

I'm gonna fail this so badly, i feel like I can wing unit 2. But Unit 1 is everything I hate

Reply 71

TwilightKnight

I_Need_To_Revise

Anyone have any guesses on what the 5 markers will be at the end?
In jan 2010 it was on the cardiac cycle and i think myocardial infarction...

Im going to guess chemical tests. Just because it hasn't come up as a 5 mark question yet.

Reply 72

Caught_A_Glimpse

I_Need_To_Revise

Anyone have any guesses on what the 5 markers will be at the end?
In jan 2010 it was on the cardiac cycle and i think myocardial infarction...

I reckon it'll be something on immunity!
in june 09 it was on starch digestion on glucose absorption
and jan 09 it was the difference between a prokaryote and eukaryote, and TEMs

Which is annoying because I find immunity most difficult! :frown:

Reply 73

VULGAR123

Unknown-User

This is an excellent summary :smile:

Thanks x

Reply 74

VULGAR123

Can you list 5 points (bullet points) on the 5 mark questions or does it need to be a paragraph with good English?

Reply 75

Unknown-User

VULGAR123

This is an excellent summary :smile:

Thanks x

No Problem :smile:

As Chem1stry said above, just remember to add that Glycosidic bonds are broken, and thats the full summary :smile:

VULGAR123

Can you list 5 points (bullet points) on the 5 mark questions or does it need to be a paragraph with good English?

I think the longer question are meant to be written in continous Prose. It usually says something about this on the front of the exam paper. I'd do it in paragraphs just to be on the safe side

Reply 76

blank_blank

DOES ANYONE HAVE THE PAST PAPER AND MARK SCHEME FOR JANUARY 2010 BIOLOGY MODULE 1??!!

it would be quite good to see it cz i thought i had done quite well :/

Reply 77

Ramses II

I know the course, I just need to read the questions. Biology AS isn't that hard.

Reply 78

INeedToRevise

TwilightKnight

Im going to guess chemical tests. Just because it hasn't come up as a 5 mark question yet.

chemical tests are usually 1/2 marks. I cant imagine it being a 5 mark question. Its probably likely that its a bigger topic like immunity or enzymes. Thanks for the sugggestions guys. Oh and plasma membrane transport hasnt come up on 5 marker so thats likely!