AQA Biology Trilogy Higher Paper 1 Tuesday 15th May 2018 Unoffical Mark Scheme

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Reply 80

dclayson

Was it the higher or foundation paper?

Original post by Aslan102

I didn’t see a question about microscopes
I had qs about eggs and chickens

Did you do the AQA Trilogy exam?

Reply 81

anonoymous24

Original post by Fallen_Angel_

what about the one that asked why the boiled carrots have no difference in mass?
I said because the cells are killed by the high temp so osmosis no longer happens....pretty sure thats wrong

I just put that the mass didn’t change because the concentration inside the carrot was the same as outside the carrot (isotonic) so osmosis couldn’t happen as it requires a concentration gradient

Reply 82

Marko20023

Original post by abdulrocks1

Oh dear, I put 1.16

So did I, forgot to round it

Reply 83

Eleperson

I found it was surprisingly very maths based considering it was biology

Reply 84

Jackjacklll

Anybody else put 1.16 recurring for the cell cycle question? If so will it make a difference if you put 1.17 or 1.16 recurring?

Reply 85

Mxsti

for that cancerous boiled carrot question, i just said that since the temp is too high, the enzymes have denatured and osmosis wont happen.

doesnt look right but since aqa cant give us a reliable question had no choice.

that chd 5 marker was 50/50, just spoke about obesity and smoking(carcinogen) being risk factors.

pictogram question was odd

some questions in this exam were actually dumb lmao

Reply 86

Qwerty_qwerty

what did you get for the last one on therapeutic cloning advantages and disadvantages

Reply 87

tyryer

you did triple science

Original post by A_Winter

I did AQA Biology Higher today and there was no question on microscopes. Am I missing something here?!

Reply 88

tyryer

Original post by Jackjacklll

Anybody else put 1.16 recurring for the cell cycle question? If so will it make a difference if you put 1.17 or 1.16 recurring?

it wanted it to 3 significant figures, so you would only get 1 mark out of two

Reply 89

abigail21

Original post by leannexii

15/360 X 28 = 1.1666666 so 1.67

swear it’s 28/360 X15 = 1.16

Reply 90

Taesthetichope

I forgot to revise the meristem part

Reply 91

Laura.bx

Original post by mrydo

yeh i gt 0.42 as well

Damn I got 0.41,do you think there will be a range of answers to get the Mark? (0.40-0.43 or something)

Reply 92

Rahma01

it's because the concentration of water was almost equal inside and outside the carrots so the mass didn't change as no water entered/went off the carrot. I wrote that

Reply 93

elsaruus

Original post by idkthename

Same i have no idea what these guys are on about, i had an egg put in acid but no carrot

Eggs

Double science (Trilogy): Carrots
Triple:

Reply 94

Mxsti

Microscopy:
First one: Use the fine adjustment knob to focus onto the image.
Second one: Switch from a low power objective lens to a high objective lens to see the cell at a greater magnification.

Did anyone else get this? So many people got different answers

Reply 95

wheresmunchkin

Original post by Fallen_Angel_

what about the one that asked why the boiled carrots have no difference in mass?
I said because the cells are killed by the high temp so osmosis no longer happens....pretty sure thats wrong

the concentration in and out was the same

Reply 96

Kxlsxy

Original post by Fallen_Angel_

What about the one about picograms to nanograms?
i got 6*10^-12

I got to the power of -10 my teachers saying you had to divide it by a million 🤷🏼*♀️🤷🏼*♀️

Reply 97

Nevexhix

Original post by Hal_01

1.17

Original post by Dil007

I did: (28/360) *15 = 1.17

Probably wrong tho

I got that too!

Reply 98

KhalidN16

lol the pie chart question : 28/360 x 15 = 1.66666........ = 1.7

Reply 99

Domsterpotato

Original post by Qwerty_qwerty

what did you get for the last one on therapeutic cloning advantages and disadvantages

I put
1) The embryos can treat a wide range of conditions as they are completely undifferentiated
2) The embryonic stem cells cannot be rejected by the patients cells

1) The process is costly and time consuming
2) There are religious objections (as to when life begins)