AQA A Biology today....what did you think? Watch
I disagree, sorry....this is taken from a book -
'when the data is discontinuous, the graph is shown as a bar chart and the blocks are NOT drawn to touch each other'
The graph we had was drawn with the bars touching so it was showing continuous variation. And, it was showing measurements of length which are continuous data.
i think its called nitrogen fixation (not ammonification - did u make that word up? :P)... what questions did you guys find hard?? I found the one on niche pretty tough as i didnt know exaactly which niche each species belonged to - the diagram was confusing!
Also the question on name two structural features of a protoctisca, i just put chloroplasts and cell wall although i think its wrong, what did you guys all put??
Hmm and what was you chi squared value? i got it as around 7 (i think).
Population estimate of woodlice was 672
Most of us thought it was a bit wierd - what did you people get for the advantage of the standard deviation over the range?
It was definitly continuous data as it was length, and as far as I remember the question didn't ask which it ways, It stated it was continuous and asked you to give reasons why.
I'm having a dispute with a fellow biologer: I thought the question about a/cyanogenic plants said that their membranes break in the cold, enzymes responsible for cyanide production leak out and that meant they could no longer produce cyanide & that's it, but he thought the reason there were no cyanogens at all in the -10C range was that they had poisoned themselves w/ the cyanide that leaked out. Thoughts?
And when it said precise location of process 2 how precise did you have to be?
After deforestation CO2 levels are decreased by respiration right?
If I'm thinking of the right question, I put cristae of the mitochondria