Upcoming Edexcel AS Biology: Unit 2 exam on 26 May 2011

Just a few answers that I can actually remember putting...
A and C for the highest species richeness and lowest respectively.
The prokaryotic cell showed a flagellum and I put the outer dashed area as a capsule however some people have told me it could have been a cell wall.
I then labelled the ribosomes and circular DNA inside the cytoplasm for the other 2 marks.

There was also an adaptations question I seem to recall which I believe EVERYONE taking the exam should have got, it was behavioural therefore I think it was the one where they lie down in the heat of the sun (can't remember great detail).

I put 23,000 genes as none of them had differentiated and totipotenty is unspecialised and undifferentiated. (I'm probably wrong here).

With the allele question where it required shading I simple just swapped the point at where they cross over onto the other one. So on the new diagram I just didnt shade the little tip on the right and shaded the left top top on the right one. If that makes sense.

There was a lot of data questions and one of the stem cell questions through me completely :/.

Overall it was okay, could have been better, hopefully the grade boundaries are low and that I got a C .

The question about why the egg cell is a good source of pluripotent cells, what did people put? I talked about the blastocyst at 4-5 days, is that on the right track?

The question about why the egg cell is a good source of pluripotent cells, what did people put? I talked about the blastocyst at 4-5 days, is that on the right track?

I don't remember this question! - that's a bit worrying, ha!

Although at one point I remember writing about 4-5 days, and IVF, so maybe it's this question!

Yep I mentioned 4-5 days, you should get some marks.

A phew, at least I got (hopefully) some marks It really stumped at first, because I thought the egg cell would have been the source of totipotent cells

I'm pretty sure it was 23,000... and Jamie is right - it's only 1 mark anyway, so no big deal!

Im sticking to the fact that the structure around the outside of the prokaryotic cell was a Cell Wall and not a Capsule! I'm probably wrong - but the structure was bang next to the Cell Membrane - therefore it has to be a wall..... the capsule isn't always present, and even when it is, it is never next to the membrane

I don't remember this question! - that's a bit worrying, ha!

Although at one point I remember writing about 4-5 days, and IVF, so maybe it's this question!

Snow leopard you need to calm down and stop being ****.

I repeat,



+the cell wall isn't a floaty jelly like layer, it is a solid thick line, I can show you a thousand more links to clarify it was a capsule, but I'm pretty sure you and the people who repped your comment would argue otherwise, against all logic and thousands of pieces of evidence both online and in textbooks in order to refuse to believe you lost a mark.

Calm Down! Let's wait until August then - I have looked at your rather crude links, and neither of them confirm the structure was a capsule and not a cell wall... infact most images I have found suggest it was a cell wall.

Seeing as you seem to be the fountain of all knowledge, where do you suggest the cell wall was then in that diagram??

Does the truth annoy you?

I got the same answers as you, you're just being a dick.

Who cares where the cell wall was, the cell wall is not the final layer of prokaryotes, the capsule is, LOOOOOOOOOOOOOOOOOL what 'images' have you found suggesting a 'cell wall', that was clearly a capsule, it looks nothing like a cell wall-

I'm done here. There is some serious failure in logic in people, when all of google images is showing the final layer, the jelly wobbly bit, to be the capsule. I won't be responding any further. Believe it's a cell wall, lol, couldn't care less, just make the same mistake again, only helps lower the grade boundaries for others.

Haha... what a dick. Didnt think you'd be able to answer where the cell wall was! That's because it was what you labelled 'a capsule'.

Have a look at this link smart arse and then tell me you're right:

http://faculty.ivytech.edu/~twmurphy/txt_202/pro_cell.htm

Most prokaryotes don't even have a capsule.

Rightfully I am, I present a strong argument backed up with evidence supporting the correct answer, trying to help people out here, who are requesting mark schemes, and people just decide, 'no', 'I'll pretend I didn't see that', 'I got the mark', 'and I'll just repeat my answer, the wrong answer, a million times - because that'll make it right'.