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GCSE AQA Biology paper 2 higher 8464 June 7th 2019 unofficial markscheme

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That equation is for rate of reaction but this was for rate of reproduction so I’m guessing these are different but I don’t know 😂😂
Original post by BrandonS15
And where did you get the rate from?
Yes but I don’t think you realised one of the results was anomolous, I got 17500
Original post by BrandonS15
No you convert each of the number into m^3. They were given in dm^3 so 5 was one of them in dm^3 to get from 1dm^3 to 1000dm^3 you multiply by 1000. So do that to each of your numbers to get them in m^3. Then you can calculate mean normally since its all in m^3 you add them to 70,000, divide by 5 to get 14,000.
Do u think I’ll get error carrier forward marks because I divided by a 1000 , but for the 2nd part I did the correct method: l*w*h x the mean I worked out?
Bc it did say use ur answer from 1.4 so even if I got it wrong but did the right method would I get ecf marks ?
Original post by nadrin
No because the data was also in dm3 so I think you had to convert it back to metres cubed by dividing by 100

Think about it, how is it possible to have 0.014 of an insect in a metre cubed area
1dm is 10cm or 0.1m
you wouldnt have less of them in a larger space.
Original post by Tamchow
1000 dm cubed is 1 m cubed. You calculated the mean in dm cubed. So you divide a thousand not multiply.
was medformin better on its own or with other drugs? Plus what were you points.
I basically said that with A and B conc. was reduced more and the standard deviation was less for the Mefofrmin by itself
The one about pink plants was 50%
no you had to use the punnet square to get 50% as pink as the rest was 25% red and 25% white
Original post by ReeperReep
50%


Original post by kingkrishna
Ever heard of a 0.0014th of a Daphnia?? LMAO


ever heard of a daphnia :biggrin:
for everyone saying it was 14000 are wrong my teacher done it
method:
1m3 = 1000dm3
16+28+5+21 = 70
70/5 = 14
as that was in 1dm
you divide it by a 1000
and you get 0.014
and for the standard form it was
2.5 * 0.5 *1.5 = 1.875
1.875* 0.014 = 0.02625
therefore
0.2626* 10^-1
thats my teacher got and three teachers done it together
Original post by kingkrishna
No idea where this guy got 70 lol


When you work out the mean of the 5 samples they add to 70dm cubed "lol"
(edited 4 years ago)
I put dialysis can result in blood clots and that nutrients are lost when dialysis is used 😂😂 I wasn’t confident on my answers though:
Dumb teachers then
Original post by sahmad35
for everyone saying it was 14000 are wrong my teacher done it
method:
1m3 = 1000dm3
16+28+5+21 = 70
70/5 = 14
as that was in 1dm
you divide it by a 1000
and you get 0.014
and for the standard form it was
2.5 * 0.5 *1.5 = 1.875
1.875* 0.014 = 0.02625
therefore
0.2626* 10^-1
thats my teacher got and three teachers done it together
what is the germination practical do you write about different directions?
There cant be onomalies in sampling
Original post by sahmad35
for everyone saying it was 14000 are wrong my teacher done it
method:
1m3 = 1000dm3
16+28+5+21 = 70
70/5 = 14
as that was in 1dm
you divide it by a 1000
and you get 0.014
and for the standard form it was
2.5 * 0.5 *1.5 = 1.875
1.875* 0.014 = 0.02625
therefore
0.2626* 10^-1
thats my teacher got and three teachers done it together

Mate your teachers are extra special of you think you can get a number of insects as a decimal xdddd
**** your logic lol, it's all about what's in the question, there's no fact that they've given saying there can't be less than one ********
Original post by FrankSmith2002
Think about it, how is it possible to have 0.014 of an insect in a metre cubed area
Your teachers are full of **** then
Original post by sahmad35
for everyone saying it was 14000 are wrong my teacher done it
method:
1m3 = 1000dm3
16+28+5+21 = 70
70/5 = 14
as that was in 1dm
you divide it by a 1000
and you get 0.014
and for the standard form it was
2.5 * 0.5 *1.5 = 1.875
1.875* 0.014 = 0.02625
therefore
0.2626* 10^-1
thats my teacher got and three teachers done it together
****ing hell are guys ****ing retarded or something how the **** do u have 0.0014 of an organism.
The table said 1dm3 and 1000dm3 = 1m3
Reply 198
Avatar for jkd08
jkd08
6
It really depends on how big your triangle for the gradients were. Pretty sure their will be a range of answers
Original post by BrandonS15
Agreed with all 3 except for the tangents one I got 3.78 which I put down as 3.8. It didn't mention the level of significance needed so 4 is good as well.
Also the answer was 14,000 not 17,500 since it was random sampling,i think you should count it anyway

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