Unofficial Mark scheme: AQA GCSE Biology Paper 1 Triple Higher Tier 16th May 2023

21

Questions I remembered were:
Give 3 differences between asexual and sexual reproduction?(3 marks)
What are 2 aseptic techniques used for growing bacteria experiment?(2 marks)
Why can scientists grow bacteria at 37C but students grow bacteria at 25C? (3 marks)
State one reason why the paper disc C wasn't dipped in any antibiotic? Why should Antibiotic B be used instead of Antibiotic A?(2 marks)
Describe an investigation on athletes during different types of exercises have different heart rates? (6 marks)
Describe 2 effects of Anaerobic respiration on the body? (4 marks)

21

I put 12

idk people in my class also did 19-23
how did you make your graph, was it going up in 10, 20 or 5 per big box.

For the first one I wrote that tissue is a group of cells made up of the same type of cell
idek if thats right lmao

20 for me

you must have misread the results or something cuz your line of best fit should have read between 19-23 for 35. It may depend on how you’ve set out your graph tho

Samee

What did people get for the last question with the leaf discs and why the air must be removed and why they move to the surface of the solution, also
the three differences between asexual and sexual reproduction, I only thought of 2 (asexual produces clones and is faster) but for the third I said there's no fusion of gametes fir asexual although the question already said it only had one parent' I don't know if my last one counts but I really couldn't think of another

I put 12

If you put 14.4 mg would you still get a couple of marks?

If you put 14.4 mg would you still get a couple of marks?

for the math question [i think it was 1.4 or 1.5] i got 1.44 ??

What was that one about percentage of students with disorder S? It was so confusing i didnt understand what they were asking

i divided by 1000 ;(((((((((