Edexcel GCSE Biology B1 12 May 2015

Also, do you think the grade boundary for an A* will go up or down out of interest? :smile:

Last years was fairly high at 50/60

Reply 22

123qwertyuio

Original post by Lucy1274698

What mutualistic relationships did everyone put for the 3 examples? I put chemo synthetic bacteria in hydrothermal vents, oxpeckers and leguminous plants and bacteria on root nodules, is this right? :s-smilie:

I put the same, except I didnt mention Oxpeckers :smile:

, and yeah it's right

Reply 23

Katiiie_louise

Original post by 123qwertyuio

Also, do you think the grade boundary for an A* will go up or down out of interest? :smile:

Last years was fairly high at 50/60

I think it might stay the same, as this test was quite easy, so boundaries are likely to be high

Posted from TSR Mobile

Reply 24

Original post by ANDYFC16

Organisms cannot live in acidic environments. I think? thats what i put. :confused:

eutrophication mate

Reply 25

Original post by 123qwertyuio

Also, do you think the grade boundary for an A* will go up or down out of interest? :smile:

Last years was fairly high at 50/60

53 for A* I would say as everyone I know found that easy

Reply 26

Original post by 123qwertyuio

Hey, what did you lot get for the question where we had to work out how much smoking had decreased from a graph? I got 23%, my friend said he got 10%, any ideas on what it was? And also do any of you know how many marks it was worth?

Answer was 10% as it was 30% in 1990 and 20% in 2010, and it was a 1 mark question

Reply 27

ANDYFC16

Original post by HarryKane28

eutrophication mate

Oh yeah kind of talked about it but i didnt say the name. But i did talk about eutorophication in the question besude it on the next page.

Reply 28

Original post by ANDYFC16

Oh yeah kind of talked about it but i didnt say the name. But i did talk about eutorophication in the question besude it on the next page.

Yeah, then you will get some marks :smile:

Reply 29

ANDYFC16

What do you think were the grade boundaries for c,b,a and a*?

Reply 30

Chakara

Original post by Katiiie_louise

Which one was that?

Posted from TSR Mobile

it was about interdependence with the energy stuff

Reply 31

Original post by ANDYFC16

What do you think were the grade boundaries for c,b,a and a*?

28 for C
36 for B
45 for A
53 for A*

Reply 32

Chakara

What did people put down for the question about cystic fibrosis causing a man to become infertile?
I said that the mucus blocks the reproductive system?

Reply 33

Katiiie_louise

Original post by Chakara

What did people put down for the question about cystic fibrosis causing a man to become infertile?
I said that the mucus blocks the reproductive system?

Yeah I pretty much put that, I wasn't sure though as we never did it

Posted from TSR Mobile

Reply 34

Original post by Chakara

What did people put down for the question about cystic fibrosis causing a man to become infertile?
I said that the mucus blocks the reproductive system?

Mucus blocks the sperm ducts but yeah I think you will get the marks for that

Reply 35

GetA*OrDieTryin

can someone put the answers up according to what they wrote please? test was easy but was jammy too

Reply 36

The_Phlox

3

If you mess up the names in the blood glucose concentration will you still get the marks

Reply 37

student.10

mee too it, it was so damn hard i dont think we've been taught about doing punnet squares in that way. question 4 really threw me
10 marks down the drain

Reply 38

yasssssmin

That paper was beautiful! The 6 mark questions were a blessing xD Hope you all did well!
I was wondering what everyone put for the interdependence calculation? The one with the oak tree and caterpillars?

Reply 39