AQA BIOL2~3rd June 2013~AS Biology (Now Closed) Watch
i got 442% or something.
in the snakes i'm pretty sure 1 question was about how the male shows less courtship behaviour to shorter females and filter paper with shorter lipids on them. (the bar chart)
the one after was trying to make you state the relationship between the longer females producing more fatty acids which initiates courtship behaviour.
why the garter snakes don't react to other female species who also produce fatty acids on their skin was to due to the fact they have different fatty acids? (got this one wrong i think now, i should've said about how courtship behaviour is specific to species etc.)
also i said you could intrapolate the line of best fit to find values to estimate the courtship behaviour towards females of 75cm or something.
btw for phylogeny i said something along the lines of: 'share a common ancestor' is that a mark? =(
well the exam started out ridiculous for me because i caved to exam pressures and made a stupid error like thinking the exam would be over 30 minutes early. so i rushed straight to the end. grrr.
I got 442 % as well...the numbers were 42 and 186.
42 x 4 = 168
plus the other bit = 186.
Hmm....I'm kinda surprised at the response to the exam. My prediction of 6 marker was true!
Why was diffusion higher when water from tracheoles in insects was removed? Higher SA:VR?
Species diversity was 6 something?
Tick boxes: quaternary structure was haemoglobin? Nitrogen present in starch and cellulose? Can't remember other box...
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Starch and cellulose don't contain nitrogen and I agree with the higher sa:vr ratio one
I did too lol hmm seemed legit at the time... What were the people writing this exam thinking? Rambling on about snakes and courtship for 4 pages! A bit extreme and random.