↑↑↑ In the poll above, and answer like '> 30%' would mean between '30%' and '40%' ↑↑↑Remember a question? Post your answers below.Follow me and I will try and post the answers for the Chemistry and Physics exams on Wednesday and Friday. AQA B2 Higher - Unofficial Mark Scheme (Updated Regularly) (Should have the last few questions of foundation)
1. Athlete Questiona)
i) Anaerobic means respiration without oxygen
ii) The athlete was running for 1.5 minutes.
b)
How do you know it was anaerobic respiration? The athlete produced lactic acid
2. Pond weed Photosynthesis. - Move the light different distances from the pond weed. Count bubbles in one minute. Keep pond weed length the same.
3. Enzymes question. - Circle Question: Cytoplasm.
4. Plantains, Quadrats.
To improve their investigation: Use random sampling, take more samples.
I got the number of plantains
per square m at
3.1255. Polydactyly Question
Stem cells are undifferentiated stem cells that can potentially become any cell.
6. Removing bacteria from milk with catalase.
•
Advantages: Catalysts can be reused
•
Disadvantages: Enzymes can denature
These weren't the only ones but are the ones I have seen posted the most.7. Meiosis & Mitosis. The sperm cells were
produced in the testes by Meiosis. The embryo divided by Mitosis.
For the question about the size of each cell:8)Foxes, Geographical isolation. Adapted differently. Mutation, So unable to breed. Different species.
Why were the foxes on the 3 islands varies but still the same species?The islands have similar conditions so the two species adapted similarly and were so similar they could still interbreed so were still of the same species.
I am not sure what question these answers were for)•
Muscular tissue contracts and churns food in the stomach
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Epithelial tissue covers the stomach
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Glandular tissue secretes hormones and enzymes
Note: The questions may not be in the right order. This is a mix of my answers and those of the community but they are not guaranteed to be correct.