A2 Biology OCR June 2015 Revision Thread

I literally guessed all of the answers, how is it fair to ask about AS when that isn't on the f215 spec??

Ikr. I don't want to retake this stupid paper because it will be worse next year


Posted from TSR Mobile

For the question about the diameter of the bronchioles, did anyone write smooth muscle contracts to constrict the airway?? Or was the question asking what the drug does to the airway to stop the effects of asthma?? Ahhh


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What was the population that went through the most genetic drift with the Weinberg equations


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did anybody write geographical isolation (i.e allopatric speciation) for one of the question, and
Genetic drift for the very next question?

Im on a gap year

Posted from TSR Mobile

Is everyone mad, it's the single most worst exam ive ever seen, awful

did anyone put nicotine was a selective advantage?
my thought process was
-more nicotine produced so used more resources so less seeds produced
-therefore plant passes less of their alleles for susceptibility to insects to their offspring
-plants that produce less nicotine and therefore more seeds pass on their alleles for insect resistance?

C

Posted from TSR Mobile

It went downhill from the first question. I don't even know how to describe the paper. It was never ending and each question got even more stupid and un-doable.

Exactly what I did but I got 36.... Did that mean you accepted or rejected the hypothesis though?

What did you guys write for the question on the somatic gene therapy with the S drug (don't remember its name) being less effective? I talked about the immune system developing a resistance, something to that effect