AQA Triple Science GCSE Biology - Paper 1 - 14th May 2019 Unofficial Markscheme Watch

Aryan3031
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#61
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the cells already have a high concentration of dissolved sugars in them so it cannot absorb more water via osmosis hence it loses water
(Original post by ShyB)
Apparently it was to do with osmosis. I have no idea though.
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yay2202
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#62
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The rate of something i already cant remmebr
(Original post by Mohammed249)
What question was this
Still have paper 2 it cld b unbelievably hard
(Original post by Violet201)
The exam was relatively ok, kinda makes me worry that the grade boundaries are going to be really high though...
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captaingiggles
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#63
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(Original post by Erevising45)
I think it was to do with osmosis and how as people with diabetes are unable to control their blood sugar levels they had higher concentration of sugar (so lower concentration of water in the blood than in the cells). Therefore, the water moves from a high to a low concentration through the cell’s partially permeable membrane.
Same. I was initially thrown off because glucose was lost via piss, so I thought concentration would be lower
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sqrt of 5
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#64
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(Original post by Kaiix)
********. Every single q was a fxcking practical. Everything I revised for never came up, exaggerating but still smh.. load of shxt if you ask me, triple was easier apparently
lol i fuxk knew it my teacher told us that they will put LOADS of practicals so we revise only those
(Original post by Elsmok)
wtf was the cube sh*t with diffusion? All i did was calculate surface area and volume for each cube and wrote everything i knew about diffusion
it was sa to v ratio B1 gas exchange
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tatianamrques
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#65
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(Original post by Char2109)
some of my maths ones were 400 for the microscope one, 3.3, 91 and 10.4
it was two significant figures
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Hydri
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#66
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#66
Yo guys i ****ed up so its okay lets bring down the grade boundaries 😛
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maxdymond
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#67
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#67
I swear the magnification one was 4000, had to change cm to mm? 24/0.006?
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asterisk_j3
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#68
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I am actually really positive about the exam. Everything I revised was on the paper, so I was happy with that. The only thing I didnt revise was the last questions on nitrate absorption in plants.
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angry ape.30
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#69
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i said yellow
(Original post by Thattestwsseasy)
Benedicts test for glucose gos brick red
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Elsmok
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#70
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(Original post by sqrt of 5)
lol i fuxk knew it my teacher told us that they will put LOADS of practicals so we revise only those

it was sa to v ratio B1 gas exchange
will i have gotten any marks for what i did do u think?
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angry ape.30
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#71
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(Original post by maxdymond)
I swear the magnification one was 4000, had to change cm to mm? 24/0.006?
it was 0.06
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MUY BONITA
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#72
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The paper was alright. What did everyone get for the cube question.
I calculated the volume and surface area
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swagdonyt
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#73
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Yeaa diabetes means there is high blood sugar level meaning high conc of sugar in the blood therefore there is less conc of water in the blood in comparison to the water in the cells so the water from the cells move out of the cell into the blood by osmosis through the cells semi permeable membrane
(Original post by ShyB)
Apparently it was to do with osmosis. I have no idea though.
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sqrt of 5
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(Original post by Elsmok)
will i have gotten any marks for what i did do u think?
that is exactly what you had to write about xD
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TeoniLee
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#75
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#75
Thinks I messed up the monoclonal antibodies one as I did not know they bonded to radioactive material but awww well.
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Siona-29
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#76
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I was writing that when the examiner said stop writing. But I carried on anyway.😂
(Original post by Erevising45)
I think it was to do with osmosis and how as people with diabetes are unable to control their blood sugar levels they had higher concentration of sugar (so lower concentration of water in the blood than in the cells). Therefore, the water moves from a high to a low concentration through the cell’s partially permeable membrane.
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Heyitsemilymay
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#77
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I put the same
(Original post by Shadowkillz98410)
For how to make the photo synthesis one more valid I put use Gad syringe matead and get someone else to repeat the experiment and check if results are similar. Is this right
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Honeybeehoney251
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#78
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#78
What answers did people get for the fish gills question and low concentration of oxygen in water
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sqrt of 5
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(Original post by MUY BONITA)
The paper was alright. What did everyone get for the cube question.
I calculated the volume and surface area
yep i think everyone did

Evil Homer i think we can use this as a mark scheme
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Rebekah2811
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#80
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#80
I think I got about 67 marks what grade do you think that’ll be
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