AQA BIOL1 ~ 14 May 2012 ~ AS Biology

Do you think this is all we need to know about b and t cells..?
Or is there more? x

Reply 143

Original post by AlligatorSky

Same, 4 marks off an A. :O

Sucks doesnt it :/
I was at first, VERY happy with the B... because I thought I had a D
But now i'm just gutted having to re-do the whole unit :/ x

Reply 144

I think unit 2 is a million times worse than this.
I really really dislike it.
Hope A2 will be okay :/

(edited 11 years ago)

Reply 145

Polioz

14

Original post by AlligatorSky

Do you think unit 2 is easier?

I wouldnt say unit 2 is harder per say, but sometimes it can feel that way because its got more content I think?

I find unit 5 hard , its like 2 unit 2s + an essay.

Reply 146

Original post by britash

Sucks doesnt it :/
I was at first, VERY happy with the B... because I thought I had a D
But now i'm just gutted having to re-do the whole unit :/ x

I was alright with it, but I knew that Medical universities wouldn't be alright with it.

And that thing you asked about B and T cells, I think you need to know more,
you need to know the whole process in which the pathogens are attacked.

Reply 147

Original post by Polioz

I wouldnt say unit 2 is harder per say, but sometimes it can feel that way because its got more content I think?

I find unit 5 hard , its like 2 unit 2s + an essay.

ESSAY?
Im not good at writing essays, like not good at all. :/

Reply 148

Polioz

14

Original post by AlligatorSky

ESSAY?
Im not good at writing essays, like not good at all. :/

yeah theres a 25mark essay at the end of unit 5 exam, you can pick between 2 questoins. At the beggining last year I was like OMFG AN ESSAY?!. But its not THAT bad. Its about 2 pages of writing and you should cover 5 topics, its almost like 5 5markers, but not as much detail.

but you cant get full marks unless you talk about things outside the sylabus lol

Reply 149

Original post by Polioz

yeah theres a 25mark essay at the end of unit 5 exam, you can pick between 2 questoins. At the beggining last year I was like OMFG AN ESSAY?!. But its not THAT bad. Its about 2 pages of writing and you should cover 5 topics, its almost like 5 5markers, but not as much detail.

but you cant get full marks unless you talk about things outside the sylabus lol

Oh, well there's a long time for that, hopefully my essay writing skills will improve.

Has anyone tried the CGP books for biology?

Reply 150

Essays and science should never mix :frown:

Reply 151

iPthreefifthteen

8

Original post by Baddream

Really don't understand carrier proteins & channel proteins.. Anyone care to explain? :smile:

For carrier protein all you need to know is:

- Different carrier proteins facilitate diffusion of different molecules
- Carrier proteins transport large molecules in and out of the cell
- Down a concentration gradient i.e. from high to low concentration
- the process starts by large molecule attaching to carrier protein
- The protein then changes shape
- Which releases molecule on opposite side of membrane
- it's a passive process - no energy is used

And for protein channels:

- Different protein channels facilitate diffusion of different charged particles
- Protein channels form pores in the membrane
- For charged particles
- Down a concentration gradient
- This is also passive

I hope I haven't missed anything important out :smile:

Reply 152

Original post by AlligatorSky

Oh, well there's a long time for that, hopefully my essay writing skills will improve.

Has anyone tried the CGP books for biology?

Nope. I stick to my textbook and markschemes to be honest.
They work for some people though.
Depends if you learn by colours, pictures, boxed info and.. no offence CGP but bad jokes :tongue:

My friend swears by them, but I find them pointless :biggrin:

Reply 153

Original post by iPthreefifthteen

For carrier protein all you need to know is:

- Different carrier proteins facilitate diffusion of different molecules
- Carrier proteins transport large molecules in and out of the cell
- Down a concentration gradient i.e. from high to low concentration
- the process starts by large molecule attaching to carrier protein
- The protein then changes shape
- Which releases molecule on opposite side of membrane
- it's a passive process - no energy is used

And for protein channels:

- Different protein channels facilitate diffusion of different charged particles
- Protein channels form pores in the membrane
- For charged particles
- Down a concentration gradient
- This is also passive

I hope I haven't missed anything important out :smile:

Your signature picture is addictive.. I can't quite stop myself from watching it :tongue:

Reply 154

Polioz

14

CGP books are fine to grasp concepts as they usually explain things better. But I dont think they are detailed enough to get an A.

Reply 155

iPthreefifthteen

8

Original post by britash

Your signature picture is addictive.. I can't quite stop myself from watching it :tongue:

Haha I have wasted many hours watching it :biggrin:

Reply 156

Original post by britash

Nope. I stick to my textbook and markschemes to be honest.
They work for some people though.
Depends if you learn by colours, pictures, boxed info and.. no offence CGP but bad jokes :tongue:

My friend swears by them, but I find them pointless :biggrin:

I find them pointless too!
I find them lame, and too kid-ified, I mean if you learn everything from your text book and revise from the CGP, its alright, but from my point of view you should never learn something from them.
But people in my class are crazy about them, they call it the 'bible'. -_-

Reply 157

SoftMusk

10

i got a C in unit 2 by just doing past papers and memorising the answers lol....now here comes bio 4 and bio 5 lol

Reply 158

Original post by SoftMusk

i got a C in unit 2 by just doing past papers and memorising the answers lol....now here comes bio 4 and bio 5 lol

That was.. well, quite risky of you. :P

Reply 159