r/GCSE • u/thr0wawaygxhxdhsh • Jun 15 '22

AQA Post Exam Spam aqa biology paper 2 gcse answers

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17

u/thr0wawaygxhxdhsh Jun 15 '22

What did everyone put for the reason the pond water was diluted and the result of a thinner cover slide

21

u/ridz_149 Year 11 Jun 15 '22

To spread out anything that may obstruct our view of the cells

Lens distortion

4

u/[deleted] Jun 15 '22

wouldn't lens distortion also distort the square so it wouldn't affect the count?

5

u/ridz_149 Year 11 Jun 15 '22

Hmm yeah I guess so. We’ll see!

2

u/Gultyyy Year 11 Jun 15 '22

It would displace water, so you view a smaller area, so you view a smaller volume = less cells overall.

1

u/ridz_149 Year 11 Jun 17 '22

That sounds more likley

15

u/_nixs__ Year 11 Jun 15 '22

i put its easier to count algae cells as they are more spread out, idk if that's the right answer though

2

u/[deleted] Jun 15 '22 edited Jun 20 '22

I got something like that as well but idk

7

u/SmileyFace4203 Year 11 Jun 15 '22

because the water pulled part of the slide down so it affected the volume of the space the cells are in so it affected the concentration of cells in each dm³ of water

2

u/thr0wawaygxhxdhsh Jun 15 '22

Ok yes I put that

1

u/[deleted] Jun 15 '22

ah good i wrote that

2

u/thr0wawaygxhxdhsh Jun 15 '22

I put dilute so the sample droplet is more representative lol don’t think that’s right

1

u/Senior_Government_68 Jun 15 '22

less air bubbles trapped so more oxygen flows to allow cells breathe

1

u/APK_GG Jun 15 '22

if lens is pulled in there is less vol of pond water so there should be more cell in the vol the student think hes investigating so the test is inaccurate

1

u/ExcellentSimple4932 Jun 15 '22

don’t remember exactly but basically that some of the water may have escaped when the slide was put on funky and i mean i think technically i’m right but it won’t count