AQA Biology Unit 1 January A-S 2012 *EXAM FINISHED*

Original post by Mocking_bird

Nope, just dislike HSW. :P

You'll still hate it.

Reply 185

AtomicMan

13

Original post by Mocking_bird

Nope, just dislike HSW. :P

I agree, I hate HSW, it seems the questions are so open ended but they want exact answers -.-

I will also be dreading Unit 4, ecology :s-smilie:

Unit 2 seems to have alot of plant/animals stuff aswell :/

Reply 186

AtomicMan

13

Also, the fluid-mosaic model is so called because the phospholipid molecules can move realitve to each other (fluid), but the mark scheme just confused me, as for mosaic is says that is because the proteins and phospholipids are of different sizes and shapes, however I thought that all the phospholipid molecules would be of the same size/shape o.O Or am I just confused and they really just mean proteins in the phospholipid bilayer?

help!

Reply 187

ned6494

Re-taking this exam nd still havent started to revise so many exams in Jan :frown:

Reply 188

Original post by AtomicMan

Also, the fluid-mosaic model is so called because the phospholipid molecules can move realitve to each other (fluid), but the mark scheme just confused me, as for mosaic is says that is because the proteins and phospholipids are of different sizes and shapes, however I thought that all the phospholipid molecules would be of the same size/shape o.O Or am I just confused and they really just mean proteins in the phospholipid bilayer?

help!

You got scattered proteins, glycoproteins and phospholipids which make it look like a mosaic. (Might have carbohydrates can't remember). I think the phospholipids are the same size as each other but proteins aren't the same size as phospholipids.

Can see the different sizes.

Reply 189

AtomicMan

13

Original post by ??????????????????

You got scattered proteins, glycoproteins and phospholipids which make it look like a mosaic. (Might have carbohydrates can't remember). I think the phospholipids are the same size as each other but proteins aren't the same size as phospholipids.

Can see the different sizes.

Yes, but I'm talking about the phospholipids that make up the bilayered sheet, they cant be of different sizes since they are the same molecule :s-smilie:

Reply 190

kimm

does anyone know if we need to know about starch, cellulose and glycogen~

Reply 191

EffKayy

16

Original post by kimm

does anyone know if we need to know about starch, cellulose and glycogen~

Starch yes- starch digestion, and the idea that it's made from alpha glucose.
That's all - more detail in unit 2 e.g how its insoluble.

Cellulose and glycogen are also in unit 2

Reply 192

I'm screwed for this exam.
Got a C in June, wanting an A preferably this time round but I'll settle for a solid B.
I find I know the gist of all the topics but I find it hard to remember the detail, anyone else get this?

Reply 193

Original post by TheWorldEndsWithMe

I'm screwed for this exam.
Got a C in June, wanting an A preferably this time round but I'll settle for a solid B.
I find I know the gist of all the topics but I find it hard to remember the detail, anyone else get this?

I'm more of bad technique when answering than remembering it. Was the C overall or C in this paper?

Reply 194

Original post by ??????????????????

I'm more of bad technique when answering than remembering it. Was the C overall or C in this paper?

Both.
Got an A in the ISA/coursework/whatever you call it, a C in this paper and a D on module 2. Resitting that one too, of course. I'm aiming for a B in the whole thing, but an A would be nice.

Reply 195

Original post by TheWorldEndsWithMe

Both.
Got an A in the ISA/coursework/whatever you call it, a C in this paper and a D on module 2. Resitting that one too, of course. I'm aiming for a B in the whole thing, but an A would be nice.

Resitting for an A. Not sure if I'll get it but more UMS is nice anyway.

Reply 196

Original post by ??????????????????

Resitting for an A. Not sure if I'll get it but more UMS is nice anyway.

Yeah. More UMS at AS=less at A2.
I'm just worried since my uni choices want As in sciences so that means I basically need As in my maths and bio. :/

Reply 197

AKarim123

Do we know need to know how to read an ECG?

Do we need to know about the medulla and chemical receptors or sensory receptors involved in the lungs chapter?

Do we need to know about diastole and systole cuz i dont see it in the specification?!?!

and does anyone have any noteson the lung diseases???

Reply 198

Original post by TheWorldEndsWithMe

Yeah. More UMS at AS=less at A2.
I'm just worried since my uni choices want As in sciences so that means I basically need As in my maths and bio. :/

What's the third subject and uni course?

Reply 199