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AQA biology unit 1!!!

Vanny17

19

How did everyone find the exam?

Reply 1

kieran_s

better than the jan one but what did u write for the lsat question?

Reply 2

Vanny17

OP

19

kieran_s

better than the jan one but what did u write for the lsat question?

I wrote the total volume of air in the capillaries and alveoli is high so large surface area
Aleveolar epithelium and capillary wall is one cell thick so reduced diffusion pathway
Many blood vessels so large surface area
Many capillaries so large surface area
Ventilation- breathing movements carries oxygen in low concentration and removes oxygen in high concentration so a diffusion gradient is maintained.
What about you?

Reply 3

chipsnfish

what did you write for the golgi apparatus question...soooo stuck on that one, gave up in the end.

Reply 4

kieran_s

Vanny17

I wrote the total volume of air in the capillaries and alveoli is high so large surface area
Aleveolar epithelium and capillary wall is one cell thick so reduced diffusion pathway
Many blood vessels so large surface area
Many capillaries so large surface area
Ventilation- breathing movements carries oxygen in low concentration and removes oxygen in high concentration so a diffusion gradient is maintained.
What about you?

ahhh...i ran out of time and briefly read the question while answering! lol
i just put down ficks law

Reply 5

w04andia

13

Stupid HPV question. looool

Reply 6

Vanny17

OP

19

chipsnfish

what did you write for the golgi apparatus question...soooo stuck on that one, gave up in the end.

I wrote EFJ because MRNA comes out of the nuclear pore then the RER synthesises the proteins finally the proteins are modified by the golgi apparatus

Reply 7

*MJ*

2

These exams are always 'bent'.

There will be low grade boundaries.

Don't worry. :h:

Reply 8

Vanny17

OP

19

kieran_s

ahhh...i ran out of time and briefly read the question while answering! lol
i just put down ficks law

Yes, you could get 2 marks for that.

Reply 9

zimmobug

what did you put for the arteries question about the lumen?
ohh and the hpv ones??

Reply 10

Vanny17

OP

19

zimmobug

what did you put for the arteries question about the lumen?
ohh and the hpv ones??

I put something about coronary artery being blocked, so less oxygen to the heart muscle, starvation of oxygen then leads to the death of the heart muscle.

I wrote that HPV is a protein that attaches to the receptors of a cell membrane then it stimulates the production of antibodies

I wrote that there would be a longer lasting effect( secondary response)
More memory cells to recognise the virus when it attacks again and more antibodies production

Reply 11

fink

I thought it was OK. I have a tendency to rush these things and I forget to put down important infomation. Oh well, If I ****** it up I'll just do a retake next year, lol.

Reply 12

Vanny17

OP

19

fink

I thought it was OK. I have a tendency to rush these things and I forget to put down important infomation. Oh well, If I ****** it up I'll just do a retake next year, lol.

I used to panic when doing exams but now it is to a minimum and i have seen the benefits of it, don't stress yourself out when doing exams, be positive, the grade boundaries might drop :smile:

Reply 13

fink

zimmobug

what did you put for the arteries question about the lumen??

Increased blood pressure, hypertension leads to strain put on the heart. As well as risk of penetration into the lumen casuing blood clot which can form an embolism and move in to a coronary artery = potential myocardial infarction, part of the heart recieves little oxygen and dies.

Reply 14

RodrigoB

4

OMG guys that was easy wasn't it? I just got a bit stuck on the chocolate(cholesterol) experiment :biggrin:

DDD

Reply 15

Vanny17

OP

19

w04andia

Stupid HPV question. looool

What did you write for movement of substances into the cell membrane?

Reply 16

GunnerArshavin

1

*MJ*

These exams are always 'bent'.

There will be low grade boundaries.

Don't worry. :h:

True, I once got 29/45, which was an A* :lol:

Reply 17

RodrigoB

4

for the movement I wrote

Lipid soluble diffusion through the Phospholipid bilayer
Facilitated diffusion of water soluble substances and ion through protein channels and carriers (intrinsic protein) Down their conc. gradient (passive)
Active transport of substance against a conc. gradient through a carrier protein using ATP manufactured in the mitochondria.(active)

Did I miss out anything?

Reply 18

bolo156

RodrigoB

for the movement I wrote

Lipid soluble diffusion through the Phospholipid bilayer
Facilitated diffusion of water soluble substances and ion through protein channels and carriers (intrinsic protein) Down their conc. gradient (passive)
Active transport of substance against a conc. gradient through a carrier protein using ATP manufactured in the mitochondria.(active)

Did I miss out anything?

probably not, i added movement of water by osmosis, but i dont think that ill get any marks for this tbh, i was overinformative in this question i guess ^^