Higher Biology 2015-2016

Thanks!

I don't understand how ATP synthase works entirely either, could you help with that please?

Thanks!

I don't understand how ATP synthase works entirely either, could you help with that please?

Hey, how have everyone's prelims gone? Just curious to know. Do yours schools buy in your prelim papers and do you know which companies? I think our school uses dart publishers.

My prelim is today and I am cramming like anything

My prelim was this afternoon and I think it went fine. My school writes their own papers, though. How were your extended response questions?

Mine was this afternoon too! It went ok but I am really bad at problem-solving and there was a fair bit of that.

Extended responses, as far as I can remember were:

Lung arrangements in Amphibians and Mammals (I think) 4 marks
OR
Physiological responses in humans to decrease in temperature 4 marks (I did this one)


The last 2 were really common

Discuss either:
A(i) Isolation 4 marks
(ii) Selection 6 marks

OR

B(i) ATP Synthase 4 marks
(ii) Electron Transport Chain 6 marks (I did this one)



What about you? The prelim was easier than I expected, but I don't think I got an A really easily. Maybe just or maybe really high B. I find the problem solving and explain questions really difficult. It's unfair because I do all the revision but can't understand the context questions

I think my prelim went fine, but other people seem to have found it hard. One of my extended responses was on speciation too and I wrote 2 and a half pages, which might be a bit much :/ I hope I haven't misread questions because I lost heaps of marks because of that in the practice papers I did.

I suppose it is just practise to learn how to did context questions. Good luck with your results for all your prelims! Are you finished them yet?

Thank you! No, I still have Physics and Chemistry left and will get my results week beginning Monday 15th February

Yeah misreading the questions is so frustrating! Are you any good at the problem-solving questions? If so then how do you practice for them? Because I Suck with a capital S at them

I suppose just practise like anything else. You can probably get books that have some tips and practice questions and online is always a good resource. Sites like scholar might be good if your school is signed up to it (my school has). It has study notes etc. for all my subjects except English. I'm not sure about problem solving though.

Thanks, yeah we've Scholar too. Is it just me or are you not great at the problem solving kind of questions either? Because I am good at the questions requiring knowledge but otherwise not so much and for some reason in Biology there are many on the spot type questions.

Hey if anyone can help please do it's urgent,

doing my chemistry assignment and am on the evaluation. I have already done my Biology assignment and only now thought of this.
Does the evaluation only have to be things to improve the experiment or can you say why it was accurate as well? Because on sqa marks scheme it says:


So I am confused if you only get marks for saying how to improve it? So like can you say that your investigation is more accurate since you repeated it or because you controlled certain variables (obviously you would explain this).

Btw, I normally include both, why it's accurate and why it's not, but most of my points are only on why it is accurate.

Please help, absolutely ******* ******** myself now Already done Bio assignment and fearing I might have done it wrong

What have you guys written? Both, or just improvements?

******************************** ******************************** *HELP IT'S URGENT************************** ******************************** *******

Hey if anyone can help please do it's urgent,

doing my chemistry assignment and am on the evaluation. I have already done my Biology assignment and only now thought of this.
Does the evaluation only have to be things to improve the experiment or can you say why it was accurate as well? Because on sqa marks scheme it says:


So I am confused if you only get marks for saying how to improve it? So like can you say that your investigation is more accurate since you repeated it or because you controlled certain variables (obviously you would explain this).

Btw, I normally include both, why it's accurate and why it's not, but most of my points are only on why it is accurate.

Please help, absolutely ******* ******** myself now Already done Bio assignment and fearing I might have done it wrong

What have you guys written? Both, or just improvements?

******************************** ******************************** *HELP IT'S URGENT************************** ******************************** *******

I had a question on unit 3:

"Self-pollinating plants are naturally inbreeding and less susceptible to inbreeding depression due to the elimination of deleterious alleles by natural selection."

I don't get how natural selection occurs in plants?!?!? Someone explain please? Especially if its self pollinating then how the **** is there natural selection (survival of the fittest)?!?!?

Also, how do self pollinating plants inbreed? Does it just mean that the pollen produced then combines with the female gamete in that plant? What happens when a plant reproduces?


Thanks

Stuck again:

"In outbreeding species, inbreeding depression is avoided by selecting for the desired characteristic while maintaining an otherwise genetically diverse population."

Wtf does this whole thing mean? For the underlined part, selecting for desired characteristic is just inbreeding isn't it? SO HOW THE ACTUAL 0HOWABFIBSBISUBDICBJDIH 0WKBCKDH09E DOES THIS AVOID INBREEDING DEPRESSION!?!?!?!?!?

Can someone please explain both this and above in the simplest and retarded way possible for me to understand