A2 Biology OCR June 2015 Revision Thread

You just needed to say something like
Auxin produced at tip, auxin when distribured moves to shady side so only shady side elongates so it leans towards the sun

I did haha! You're the only person that I know who has!!

You just needed to say something like
Auxin produced at tip, auxin when distribured moves to shady side so only shady side elongates so it leans towards the sun

ahh cool, thank you! nah, i doubt it, u probably smashed it! It must have been 10x harder to do for you coz of what happened before the exam.

I hope so me going to uni depends on this.

It didn't help that the invilator kept asking me if I was OK every 10 min + exam officer is a bitch and hates everyone and wouldn't allow me to apply for special consideration despite teachers saying I should be allowed.

Agree with you on all accounts. It's a pity I didn't retake anything cause I couldnt remember any AS stuff or maybe that was from hitting my head?

Let's make an unofficial markscheme?

1. mitosis and meiosis, DNA replication and cell division

2. random segregation of chromosomes in anaphase 1 and of chromatids in anaphase 2, random fertilisation of egg, random fertilisation of sperm, crossing over, random mutation in meiosis and mitosis, chiasmata forming, random distribution of paternal and maternal DNA across the cells in meisos.

3.etc.

Do you reckon for Q 1 you could the marks for Interphase and Telophase instead of DNA rep and cell division?

Let's make an unofficial markscheme?

1. mitosis and meiosis, DNA replication and cell division

2. random segregation of chromosomes in anaphase 1 and of chromatids in anaphase 2, random fertilisation of egg, random fertilisation of sperm, crossing over, random mutation in meiosis and mitosis, chiasmata forming, random distribution of paternal and maternal DNA across the cells in meisos.

3.etc.

Do you think they will accept interphase and cytokinesis?

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Did i just make this up or is the auxin actively transported to the shady side

Auxin is actively transported into the cells, so you might get away with it if you made refernece to the elongation bit possibly.... I'm not sure though, I don't recall seeing that in my notes.

That is really unfair i am applying for it because i have a painful ear infection atm my exams officer just said to bring in a doctors note

I had trouble too, especially on the Nicotine questions. Strokes and thromboses and blood pressure... I didn't remember any of it.

I guess I'll have to hope Ive done enough to get at least a B overall in biology. My exam officer wouldn't let me even get my exam script for some of my last year's papers even though I would have payed for them - her excuse, I can't be bothered.

Does anybody remember the figures in the X^2 question?

I don't know the figures but I got 1401 as the answer.