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Edexcel Biology (Unofficial) B2 Mark Scheme.

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Reply 20
Avatar for htkta
htkta
8
Original post by keepyourapology
What were the heart questions? I completely forgot..And don't worry, I'm sure you did okay. The paper was a bit messed up.


It was a tick box with a diagram above? The first 6 marker was a little weird too, although I did manage it. Second one was much nicer, I think.
Reply 21
Avatar for Gddkajsb
Gddkajsb
What is 42 i got that???
Reply 22
Avatar for bue34 c
bue34 c
5
Original post by keepyourapology
What were the heart questions? I completely forgot..And don't worry, I'm sure you did okay. The paper was a bit messed up.


The heart question said about a coronary artery being narrowed or blocked and state the impact it would have to the heart and cells around it
Original post by keepyourapology
Yeah, lots of people said that, but then, why would they put that sucrose table if it didn't show the pattern? Maybe it was to throw us off, but I'm not very sure. I'll ask my Biology teacher. What did other people in your year put?



That's a really good answer, ngl, I put a dumb one, like there's more chloroplasts at the top because that's where most of the sun is absorbed so the plant can start producing glucose right away. Wow, I feel stupid now. xP I hope I didn't lose enough marks to lose an A*..I don't know how the grade boundaries will be.


Because there was a question comparing the two or something wasn't there? (If not, maybe they were trying to throw us off!) Everyone I spoke to but 42 aswell

& also haha thank you! It was only 2/3 marks so I think you're good - according to twitter there's really mixed opinions, people loved the exam or hated it, so hopefully lower boundaries!
Original post by bue34 c
The heart question said about a coronary artery being narrowed or blocked and state the impact it would have to the heart and cells around it


Thankyou! ^^ That was the six marker, do you remember any of the other ones?

Original post by Gddkajsb
What is 42 i got that???


Question with the pH and the sucrose/lactose.
Reply 25
Avatar for htkta
htkta
8
Original post by bue34 c
The heart question said about a coronary artery being narrowed or blocked and state the impact it would have to the heart and cells around it


Yeah, but there was a one mark Q previous to that I think. For that 6 marker I mentioned lack of respiration, build up of lactic acid, fatigue, less oxygen for diffusion to working cells etc. etc..
did you guys get 210? for the maths question?
Reply 27
Avatar for htkta
htkta
8
The second 6 marker asked about how water reached leaves in plants.
Reply 28
Avatar for htkta
htkta
8
Original post by chrlhyms
did you guys get 210? for the maths question?


Yes! :smile:
Reply 29
Avatar for bue34 c
bue34 c
5
Original post by chrlhyms
did you guys get 210? for the maths question?


i got that but its wrong because after the exam i realised 3 bases/ codon = 1 amino acid thus 620 * 3 not divide
Reply 30
Avatar for htkta
htkta
8
Original post by caitlinford3
Because there was a question comparing the two or something wasn't there? (If not, maybe they were trying to throw us off!) Everyone I spoke to but 42 aswell

& also haha thank you! It was only 2/3 marks so I think you're good - according to twitter there's really mixed opinions, people loved the exam or hated it, so hopefully lower boundaries!



The problem was, there were too many graphs to read from!! I hate it when they do that. That fossil one was bizarre!
Reply 31
Avatar for htkta
htkta
8
Original post by bue34 c
i got that but its wrong because after the exam i realised 3 bases/ codon = 1 amino acid thus 620 * 3 not divide



Great, there's another silly mistake :colondollar:
Reply 32
Avatar for bue34 c
bue34 c
5
Original post by htkta
The problem was, there were too many graphs to read from!! I hate it when they do that. That fossil one was bizarre!


which part for the fossil one? the reason why the population size decreased was weird i agree. I said it decreased due to respiration - not enough oxygen and becoming extinct lol
Reply 33
Avatar for htkta
htkta
8
Original post by bue34 c
which part for the fossil one? the reason why the population size decreased was weird i agree. I said it decreased due to respiration - not enough oxygen and becoming extinct lol


I used figures from the graph itself and talked about mutation, and introduction of new predators and human intervention??
Original post by htkta
The problem was, there were too many graphs to read from!! I hate it when they do that. That fossil one was bizarre!


Yeah! And the question around suggesting why the population of group A decreased felt more of a B1 kind of question with natural selection and stuff
Original post by bue34 c
i got that but its wrong because after the exam i realised 3 bases/ codon = 1 amino acid thus 620 * 3 not divide


oh seriously?
Original post by htkta
I used figures from the graph itself and talked about mutation, and introduction of new predators and human intervention??


Original post by bue34 c
which part for the fossil one? the reason why the population size decreased was weird i agree. I said it decreased due to respiration - not enough oxygen and becoming extinct lol


I said that because group B and C were increasing in population, they were predators for group A mammals or taking their food/habitats. I said something about climate change too.
Reply 37
Avatar for bue34 c
bue34 c
5
For the peristalsis question if u spelt it wrong u reckon they will still give you a mark?
and also what did you guys get for the estimate the volume of carbon dioxide
Original post by caitlinford3
Because there was a question comparing the two or something wasn't there? (If not, maybe they were trying to throw us off!) Everyone I spoke to but 42 aswell

& also haha thank you! It was only 2/3 marks so I think you're good - according to twitter there's really mixed opinions, people loved the exam or hated it, so hopefully lower boundaries!


i got 42 too
Reply 39
Avatar for htkta
htkta
8
Original post by caitlinford3
Yeah! And the question around suggesting why the population of group A decreased felt more of a B1 kind of question with natural selection and stuff


Yeah.. Mixed feelings I guess. The whole DNA extraction section I didn't like either, just because there's barely anything on it in the science textbooks :s-smilie:

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