Edexcel 6BIO2 ~ 3rd June 2013 ~ AS Biology

if you took the exam in Jan, and you're retaking in June, then it probably won't affect your June result, just aim for an A in this exam and you should be fine

nah, i didnt take it in Jan....i still didn't solve the jan paper...so i ll make it as an exam for myself on 2nd june....did u get my point?

Does anyone know what point 16 means on the specification?

So what would you say is the best way to get an A in this

nah, i didnt take it in Jan....i still didn't solve the jan paper...so i ll make it as an exam for myself on 2nd june....did u get my point?

Are you trying to say you are doing the january 2013 paper as a mock to do on 2nd june?

I hope this answers your question

I think, it's because the point where the DNA starts to increase is apprx 6.25 hours. The point where it stops is 10, the difference us 3.75... Hence the range for the answers.

sorry mean the y axis
it starts rising from 7.5, this is when dna replication has started and finishes at 10.

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CoolRunner I got that question for tRNA vs mRNA correct because it was repeated exactly in my "loads of questions" word document....and u remember that question i sent u about natural selection is also from it! so how do u want me to send it to u...its toooooooooooooo large to post it here

can anyone explain me the diagram question of gametes crossing over in

Q.4.(a) of ​June 2010

This is probably the best advice actually

(and you )

Nope



what sort of points are you looking for?


I learnt it just in case because a question has come up which requires you to know the structure, but it's not an important part of the syllabus if it's even in there. M


I know the xylem don't have end walls, they're continuous and they have pits, but I thought that the sclerenchyma tissure did have end cell walls


That's what I was led to believe





anyone want to try the questions as well? quote me your answers and I'll mark it for you



unfortunately, we do, but not too much, just differences, similarities and why 2 domains are more distantly related than any other

what are the similarities and differences between them? i know bacteria and eukaryota, but not anything about archaea
and about the 5 kingdoms?

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can anyone explain me the diagram question of gametes crossing over in

Q.4.(a) of ​June 2010

I think you're supposed to know that the archaea have a unique common ancestor with eukaryota, as shown in the phylogenetic tree on page 163 of the orange snab textbook. They'd usually give us information in the question as well since we don't need to know much as its hardly on the spec

Definitely learn the 5 kingdoms if you can, if not, then learn the easiest eg anamalia, plantae, prokaryotae and fungi.. the other is protocista

I think you're supposed to know that the archaea have a unique common ancestor with eukaryota, as shown in the phylogenetic tree on page 163 of the orange snab textbook. They'd usually give us information in the question as well since we don't need to know much as its hardly on the spec

Definitely learn the 5 kingdoms if you can, if not, then learn the easiest eg anamalia, plantae, prokaryotae and fungi.. the other is protocista

do we have to learn the characteristics of the kingdoms?

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I've got to say I actually didn't understand that question, so I wouldn't be able to explain it.. I got it wrong when I did it


it's not in the spec but I can see them putting it in.. maybe the simple specs such as multi/single cellular etc

ive got so much to learn left biology quite late

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Ah doing my head in!


I said:

1) Pits are found in the xylem cells
2) Allow lateral movement of water between cells

But the markscheme says:

A description to include two from:
1. pits contain plasmodesmata / pass through pits
2. (plasmodesmata) are strands of cytoplasm (which connect plant cells)
3. pits are holes through (cell) walls / thinning of wall / eq {Accept thinning of wall / eq]
4. {plasmodesmata / pits} allow [ / named appropriate substance} to pass between (plant) cells / eq;

Where did plasmodesmata come in?

ive got so much to learn left biology quite late

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Ah doing my head in!


I said:

1) Pits are found in the xylem cells
2) Allow lateral movement of water between cells

But the markscheme says:

A description to include two from:
1. pits contain plasmodesmata / pass through pits
2. (plasmodesmata) are strands of cytoplasm (which connect plant cells)
3. pits are holes through (cell) walls / thinning of wall / eq {Accept thinning of wall / eq]
4. {plasmodesmata / pits} allow [ / named appropriate substance} to pass between (plant) cells / eq;

Where did plasmodesmata come in?

you're not alone don't worry though, there's still time to get the essential stuff down


that's not an edexcel paper is it?
pit's don't contain plasmodesmata do they? if anything, plasmodesma contain pits..

I would have said areas of reduced cell walls, which are arranged in pairs between adjacent cells..