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Edexcel GCSE biology paper 1 Unofficial mark scheme

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it’s what i put
Original post by bhx6
i got y because the light focused infront of the retina so it was short sightedness
I all the same apart from lens y. I chose lens x but I'm not too sure what's correct
Original post by bhx6
everything i got:
food test for reducing sugar- benedicts solution on food then into water bath
297 for the mean one
cones are the part that detect coloured light
lens y because i thought the defect was short sightedness since light focused in front of retina
oxygen and sunlight absorbed by chlorophyll
eukarya- multiple choice about plants
blood group 6 marker- a and b are codominant so need recessive allleles to get o blood so 25%
synapse- gap where neurones meet, transfer neurotransmitter that cause electric signal in next neurone
gonarrhea- bodily fluids, wear protection, talk about how its significantly increased these past few years
1.84 x 10^8 i think it was
0.0008 one for the rate
for the amount of people infected i got 895000
rna polymerase multiple choice one
Original post by bhx6
i got y because the light focused infront of the retina so it was short sightedness


but wasn't lens x diverging lens which is used to correct short sightedness?
What did u fill the punnet square in with?
Light focusing in front of the retina is short sighed. To correct it you use a concave lens to refract the light into the retina so it was lens X.
Original post by bhx6
i got y because the light focused infront of the retina so it was short sightedness
Yeh that’s what I thought??
Original post by sunnycloudyskies
but wasn't lens x diverging lens which is used to correct short sightedness?
0.0015% of 134250= 2.01375 x10^2
Original post by ben tone
what did u fill the punnet square in with?

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A. O
b. Ab. Bo
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Original post by ben tone
what did u fill the punnet square in with?
Reply 49
mutation is a change in amino acid sequence so changes the order of them affecting shape and function
no because the question was about what was produced so oxygen is produced during photosynthesis not carbon dioxide

Original post by Inzz3
I swear it was carbon dioxide and chlorophyll
same

Original post by sunnycloudyskies
ia io
ib iaib ibio
io iaio ioio
I wrote that
Original post by bhx6
mutation is a change in amino acid sequence so changes the order of them affecting shape and function
no 134250 was 0.15 percent of the thing we were trying to find
so the number had to be much much bigger

Original post by 311202st
0.0015% of 134250= 2.01375 x10^2
can someone re-write all the questions they can remember so I can go through this again
thanks
i got lens x as well

Original post by mono5304
I all the same apart from lens y. I chose lens x but I'm not too sure what's correct
That was not what the question asked
Original post by 311202st
0.0015% of 134250= 2.01375 x10^2
Reply 57
i ccant remember which was X which was y but i did the one that wasnt a oval shape, probably wrong tho
Original post by 311202st
Light focusing in front of the retina is short sighed. To correct it you use a concave lens to refract the light into the retina so it was lens X.
Original post by 06Dhoworth
i got lens x as well


Retry sure it was lens x
That’s correct
Original post by bhx6
i ccant remember which was X which was y but i did the one that wasnt a oval shape, probably wrong tho

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