Official AQA Biology Unit 3 14th May 2013 NEW SPEC

For the blood vessel on the heart, it was the coronary artery, you wouldn't get a mark for pulmonary artery.
formthe tadpole one, the one after three days has more cells, therefore there's more respiration taking place, and therefore more oxygen needs to be absorbed from the water and more co2 needs to be expelled, and the large surface area of the things allow this to occur at a faster rate.
For the last question, the first one was lower in the hepatic vein as some of the glucose is converted to glycogen in the liver and then stored there, thus lowering the concentration leaving the liver
6 hours after, less glucose is being absorbed from the intestine but the body still needs glucose so the the pancreas releases glucagon which coverts the stored glycogen in the liver into glucose, thus meaning that the blood leaving the liver in the hepatic vein is higher in glucose than it was entering.

Thought this was a huge coincidence, as the same happened to me. Then I looked on your profile :P Hey Ben.


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For the blood vessel on the heart, it was the coronary artery, you wouldn't get a mark for pulmonary artery.
formthe tadpole one, the one after three days has more cells, therefore there's more respiration taking place, and therefore more oxygen needs to be absorbed from the water and more co2 needs to be expelled, and the large surface area of the things allow this to occur at a faster rate.
For the last question, the first one was lower in the hepatic vein as some of the glucose is converted to glycogen in the liver and then stored there, thus lowering the concentration leaving the liver
6 hours after, less glucose is being absorbed from the intestine but the body still needs glucose so the the pancreas releases glucagon which coverts the stored glycogen in the liver into glucose, thus meaning that the blood leaving the liver in the hepatic vein is higher in glucose than it was entering.

Did anyone else get 2/3 for the graph calculation?
And also battery farming and free range farming is factory farming right?

I spelled cornory instead coronary. Would I get the mark?!?


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I though this unit exam was a lot harder then the other 2. What's your opinion?

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Did anyone else get 2/3 for the graph calculation?
And also battery farming and free range farming is factory farming right?

Thought factory farming was just battery...

Thought factory farming was just battery...

What is the actual difference? The points I made were about cages & heating.

Woah, do you go to my school? Who are you? LOL.

What is the actual difference? The points I made were about cages & heating.

Battery farming is intensive (factory) farming.
Yeah, that's what I put too.

Thought factory farming was just battery...

Yeah same.


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I spelled cornory instead coronary. Would I get the mark?!?

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Okay anyone no the answer for the marathon runner?

Well at least you wrote something similar, I just wrote artery the CGP book i revised from does not mention Coronary artery anywhere, so I just wrote artery.

For the 6 marker:

- Intensive farming methods (little movement and heated) M1
- Advantages and disadvantages (unethical, miserable lives, disease spread etc VS cheaper meat production, faster) M2
- Free range or alternate meat production eg growing meat from tissue culture (lots of movement, longer lives) M1
- Advantages and disadvantages (morally and ethically right, nicer lives, better quality meat etc VS more expensive, takes longer, doesn't aid the world food shortage) M2
- Conclusion (which is best? why?) M1 (one mark may be awarded for the conclusion is another mark is missed elsewhere, if full marks are gained in all other sections, the conclusion is purely to round off the answer and prove grammatical eloquence)

Ditto this, didn't say anything about coronary arteries in CGP! Just put artery.