Edexcel GCSE Biology Paper 2 Higher Tier [9th June 2023] Exam Chat

What did you guys get for the question on why tube A was acidic, I said that because it was in the dark, it couldn’t go through with photosynthesis and therefore there was no oxygen produced and had to use anaerobic respiration which produced lactic acid but it was just a guess.

I put E due to highest oxygen concentration. I didn't see anything about nitrates..?

I thought lactic acid is not a product of anaerobic respiration in plants but ethanol is? Idk either though I just put because Tube A was in the dark so no photosynthesis occurred, just respiration so over time CO2 concentration increased which is acidic hence tube A was acidic but idk.

I thought lactic acid is not a product of anaerobic respiration in plants but ethanol is? Idk either though I just put because Tube A was in the dark so no photosynthesis occurred, just respiration so over time CO2 concentration increased which is acidic hence tube A was acidic but idk.

I said it is less likely they might group together or move side by side so a greater surface of each RBC will be exposed to the alveolus wall so will increase rate of diffusion of oxygen in and carbon dioxide out would that be right ???

u werent supposed to put it in standard form

i said the opposite of the answer, i can’t believe i’ve lost 4 marks, i’m pretty sure the answer is FSH and LH stops and there’s a surplus of oestrogen and progesterone

What did you guys get for the question on why tube A was acidic, I said that because it was in the dark, it couldn’t go through with photosynthesis and therefore there was no oxygen produced and had to use anaerobic respiration which produced lactic acid but it was just a guess.

u werent supposed to put it in standard form

nitrates from fertiliser arent good for biodiversity cause they cause eutrophication so i reckon the answer is e

isn’t it good tho because you get like sludge worms and stuff too from eutrophication so you get more species

isn’t it good tho because you get like sludge worms and stuff too from eutrophication so you get more species

I'm a year 10 student. Can anyone tell me any questions that were on animal coordination or the plant structure for combined science on paper 2?

please help😭 my science teacher is absolutely **** and my mocks are in exactly one month and it’s all paper 2 but he hasn’t taught us a single paper 2 topic yet. apparently it MIGHT be the 2023 paper.
can anyone help me out a bit w some questions or tell me some stuff that came up??

i also got that obvisouly put in standard form