Unofficial AQA Biology Unit 3 GCSE NEW SPEC Mark Scheme

Reply 260

JPL9457

10

oh and any justification for the grade boundaries being the way they are

Reply 261

MsFahima

20

Thanks so much! :smile:

Reply 262

pinkgorilla

5

Thanks for taking your time to finish the mark scheme :biggrin:

Posted from TSR Mobile

Reply 263

jopatoh

For the ISA, what would 44/50 be in UMS? And how could i calculate other scores i have for other sciences...?

Reply 264

DecantedOrange

3

I found this on the AQA site, don't know how reliable it is though, looks pretty solid. http://www.aqa.org.uk/exams-administration/about-results/uniform-mark-scale/convert-marks-to-ums

Reply 265

Cxxkie

Original post by sammann123

Bear in mind that this mark scheme doesn't include all the marking points and additional guidance that the official one will, so you probably got more than 30 :smile:

Cheers, I'm not sure though. I wrote silly things like Modern ventilation was more expensive, and the Iron Lung was claustrophobic!

Can only hope, would be disappointing if I don't get an A

Reply 266

AsainBoy

For question 2 part 4 (advantages and disadvantages of positiv pressure breathing systems), would i get a mark for saying that it allows freedom of movement, unlike negative pressure breathing aids?

Reply 267

jayjay531

8

I calculated I could get a minimum of 51 marks, is this an A*? I really need to know because I need an A* to get an A* overall

Reply 268

Quantaˌ

OP

3

Original post by jayjay531

I calculated I could get a minimum of 51 marks, is this an A*? I really need to know because I need an A* to get an A* overall

The predicted grade boundaries are under the mark scheme in the original post...

EDIT: Yes, you would get an A* if you got 51

Reply 269

king_revision

5

Original post by HarryRiley88

If the climate is dry there is a higher concentration gradient from the skin to the air, if the air is 'humid' there will be less of a concentration gradient if not none therefore no/less evaporation. myGCSEscience mentioned it in one of his videos.

Lol. Not everything he puts in his videos are on the specification. Search that on the spec and it's no where to be seen. Evaporation rate is only linked with Hot, Dry and Windy conditions. That is all you need to know. what you wrote would not gain you an advantage over what I just said...

Reply 270

GuitaringMedic

2

Original post by Cxxkie

Cheers, I'm not sure though. I wrote silly things like Modern ventilation was more expensive, and the Iron Lung was claustrophobic!

Can only hope, would be disappointing if I don't get an A

You could well get the mark for claustrophobic! Also thats only two marks down :smile:

I got out of the exam and panicked a lot because i thought i hadn't done well, but i eventually realised that i was only remembering the hard questions/ ones I hadn't done well in. Just think of the positives and get working on your next exam! :smile:

Reply 271

DecantedOrange

3

Original post by king_revision

Lol. Not everything he puts in his videos are on the specification. Search that on the spec and it's no where to be seen. Evaporation rate is only linked with Hot, Dry and Windy conditions. That is all you need to know. what you wrote would not gain you an advantage over what I just said...

I never said it would gain an advantage over your answer, I dont know about the spec but both of my biology teachers have said it'll get the mark and if he's putting revision videos on the internet for the current spec then why would he put stuff that isnt on there...?

Reply 272

zzFishstick

12

Vasoconstriction not vasocontraction.

Reply 273

Midnight1811

3

Original post by zzFishstick

Vasoconstriction not vasocontraction.

for the first question if i had put right atria rather than right atrium would i still get the mark ?

Reply 274

DecantedOrange

3

Original post by Midnight1811

for the first question if i had put right atria rather than right atrium would i still get the mark ?

Yeah pretty sure you would :P

Reply 275

mercieo

1

on the first question was it the pulmonary artery or aorta?

Reply 276

sneakbo2

10

Original post by mercieo

on the first question was it the pulmonary artery or aorta?

It was aorta.

Reply 277

king_revision

5

Original post by HarryRiley88

I never said it would gain an advantage over your answer, I dont know about the spec but both of my biology teachers have said it'll get the mark and if he's putting revision videos on the internet for the current spec then why would he put stuff that isnt on there...?

I didn't say you were wrong dude. I'm just saying that the person from before who said that we wouldn't get the marks for putting what we put is wrong. You'll get the marks, it's just the extra info was just a tad unnecessary, but hey no harm in learning more than neccessary

Reply 278

king_revision

5

how many ums do you think 56 will get me?

Reply 279

mh97

3

i would have thought that a* boundary would be lower becasue the questions in the paper were mostly application based. so aqa are likely to say that because the paper was hard then people with high marks would deserve an a*. It isnt just about percentages, its also about if the candidate desevered an a* or not. So example would be that the exam paper was really hard but a lot of people got good marks then say 10% would get a*. But then the next year the exam was really easy and a lot of people got rubbish then 5% would get an a*. AQA have specified this many times in the past.

Unofficial AQA Biology Unit 3 GCSE NEW SPEC Mark Scheme

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