Official AQA Biology Unit 3 14th May 2013 NEW SPEC

What did you guys get for the calculation question with the graph.

Really?

I know it's a new paper etc but I thought it was relatively easy, baring the tadpole question and a couple of mistakes!!!

I would love it to be around 53 for 100 ums, but I can't see that happening as everyone at my school 'thought' it was easy, though everyone seemed to get caught out by the tadpole and runner sweating one!!!

I said exactly the same! I didn't read the question properly which was a dumb move because it was worth about 2/3 marks

100/150= 0.6666666666666666666666666666666666666666etc

Noo i found B2 easier than B3.. You've probably done well then

For the first part of the tadpole question did you put oxygen?

I got that, but I only put it to 1 d.p

For the lung diagram, my original ansers were, Vein, Capillary, Artery, but then I did the thing at the end with 30 seconds to go and I changed Artery to Aorta, don't know why?

1 d.p would be 0.7 wouldn't it? meh, i just put 0.67 as it looked nicer

For the lung diagram, my original ansers were, Vein, Capillary, Artery, but then I did the thing at the end with 30 seconds to go and I changed Artery to Aorta, don't know why?

I put 0.66 with a recurring sign above.

But on the question the enlarged photo showed that the cell walls were only one cell thick? That's the reason I put capillary stents rather than artery stents...

Wasn't it:

Artery, Capillary and Vein

Oh. I did that in B2 and changed my answer for the question about the substance produced by the stomach, I originally put starch and then changed it to hydrochloric acid I got it right toooooo yayyy!!!

I got Artery, Capillary and Vein.
F was going away from the heart to the lung, so it was an artery. G was the capillaries around the alveoli and H was the vein taking the oxygenated blood back to the heart.