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2016 AQA Biology Unit 1 - Unofficial Mark scheme 2016

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Reply 1180

geographymaster

Original post by AhmarIT

What was the newsflash?

forgot lol

Reply 1181

Ashleybendal

Original post by Haashym

The indicator species answer was lichens and the environmental factor was air pollution

GM Mosquito - enzymes used to take out gene (first mark) the gene is transferred to the mosquito (second mark) at an early stage of development (third mark)

Scatter graph used to show the negative correlation

I put that too, the indicator species, is it right?

Reply 1182

Sint

Original post by Tompicko22

Can anyone tell me what they put for the question about decaying grass and carbon dioxide? :s-smilie:

I literally said the decaying grass releases carbon that gets trapped inside of the vacuum flask.

The grass is decayed by micro organisms which respire, releasing co2

Reply 1183

dannymarshmallow

for the malaria one it should be 0.66%, if you look up how many cases there were and how many actually died from malaria there were something like 200million cases and only a couple of hundred thousand deaths so 15% is really unlikely

Reply 1184

Cirsium

Original post by Tompicko22

Can anyone tell me what they put for the question about decaying grass and carbon dioxide? :s-smilie:

I literally said the decaying grass releases carbon that gets trapped inside of the vacuum flask.

Assuming it's a similar mark scheme to last year's one about decay:
Mark for mentioning decomposers (or same marking point for fungi or bacteria)
Mark for saying they're decaying the grass
Mark for saying that they're doing respiration in there

Reply 1185

lou2471

What was the answers to the horse legs one and the question that had 3 statements and you had to say why the first statement was wrong???

Reply 1186

Ashleybendal

Original post by mxn

44 is the average if you combine all the grade boundaries but since this one was hard i would say 42 for A*? If they lower them it wouldn't be lower than 39 if they choose to keep them average i feel like it will be 45 maximum (for A*).

What do you think an A and a B would be?

Reply 1187

Cirsium

Original post by Ashleybendal

I put that too, the indicator species, is it right?

Question specified an animal, so sadly not.

Reply 1188

lou2471

What was the answers to the horse legs one and the question that had 3 statements and you had to say why the first statement was wrong??

Reply 1189

israt

Original post by SSC1068

Anyone know that feeling when the paper is really hard except for that 6 marker but your the only guy that misreads the question and writes about homeostasis ? No? Ah guess its just me

you are not the only one 😂 I did the same thing !! arrgh I am feeling so stupid rn, like I lost 6 marks so easily.

Reply 1190

username1575457

Original post by Cassandra3099

but isnt that an insect and not an animal? thats why i put lichens eventhough they are not animals.. im so confused there are no animal indicators.. just things like lichens and tubifex worms

There are invertebrates

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Reply 1191

EllisW4

7. Not all boys drink because not one bar is full 100% and some boys who drank beer could have also contributed to the other bars. Also the sample of students is too small would probably get a mark
9. Using the digital one would also be easier to analyse the results and plot it on a graph or put it into a table
23. Command word to get the mark would probably refer to 'surface area'

Reply 1192

username2390469

Original post by lou2471

What was the answers to the horse legs one and the question that had 3 statements and you had to say why the first statement was wrong???

foundation right?

Reply 1193

Lucia27

Did anybody write about Lichen being a pollution indicator for SO2 on the final question?

Reply 1194

Ashleybendal

Original post by Cirsium

Question specified an animal, so sadly not.

For animal i put invertebrates and water pollution

Reply 1195

marinadiamandis

For the how are the horses feet well adapted or w/e, i put that they can still run fast even in swampy, muddy areas away from predators

I also put on the snail and the thrush question that less energy is lost since snails move slowly which means less energy is lost in respiration through movement..

Did anyone else write these? :frown:

Reply 1196

haarithiop

Why are lots of people saying that the last question asked for an animal that can be used to measure pollution or whatever. I didn't see that at all, maybe I'm wrong but it seems loads of people put lichen while others are saying it asked for another animal.