0654.B12.1.04 — Describe anaerobic respiration as the chemical reactions in cells that break down nutrient molecules to release energy without using oxygen: past paper questions
Real questions on 0654.b12.1.04 — describe anaerobic respiration as the chemical reactions in cells that break down nutrient molecules to release energy without using oxygen
The newest 13 of 13 written questions. Open one to see it on the real paper.
- 0973/41 · October/November 2025 · Q2b(ii)[2]
Anaerobic and aerobic respiration occur in the human body. difference difference Describe two ways anaerobic respiration is different from aerobic respiration in the human body.
See it on the paper → - 0973/42 · May/June 2024 · Q8d[1]
Ethanol is made by fermentation. State one condition for making ethanol by fermentation.
See it on the paper → - 0973/41 · October/November 2023 · Q4a(i)[1]
Identify the sugar in Table 4.1 that produces the largest volume of gas.
See it on the paper → - 0973/41 · October/November 2023 · Q4a(ii)[2]
Calculate the rate of anaerobic respiration for sugar A in Table 4.1. rate of anaerobic respiration for sugar A = cm 3 / min
See it on the paper → - 0973/41 · October/November 2023 · Q4a(iii)[1]
State the name of the gas produced in this investigation.
See it on the paper → - 0973/41 · October/November 2023 · Q4a(iv)[1]
State one practical use for the anaerobic respiration of yeast.
See it on the paper → - 0973/31 · October/November 2021 · Q6c(i)[1]
Describe in terms of electrons how the plastic ruler becomes positively charged.
See it on the paper → - 0973/31 · October/November 2021 · Q6c(ii)[1]
State which row from Table 6.1 shows the charge on the cloth compared to the charge on the plastic ruler. Table 6.1 row sign of charge magnitude of charge 1 positive equal 2 positive bigger 3 positive smaller 4 negative equal 5 negative bigger 6 negative smaller row no
See it on the paper → - 0973/42 · May/June 2021 · Q4a(i)[3]
Compare the results for the different types of sugar. Include comparative data from Fig. 4.1 in your answer.
See it on the paper → - 0973/42 · May/June 2021 · Q4a(ii)[1]
State one other product of anaerobic respiration in yeast.
See it on the paper → - 0973/32 · May/June 2020 · Q11c(i)[1]
State the name of this process.
See it on the paper → - 0973/41 · October/November 2019 · Q1a[3]
Complete the sentence to define the term anaerobic respiration. Anaerobic respiration is the reactions in cells that break down nutrient molecules to release without using .
See it on the paper → - 0973/31 · May/June 2019 · Q11c(ii)[1]
Ethanol is also made by the action of yeast on glucose. Name this process.
See it on the paper →
What examiners said
The majority of candidates identified sugar C as the sugar with the largest volume of gas produced.
— Examiner report, October/November 2023, 0973/41 Q4(a)(i) (Cambridge)
Most candidates were able to calculate the rate of respiration for sugar A in cm3 / min. Some candidates did not convert the value from the table of volume of gas produced in 2 hours into volume of gas produced in 120 minutes.
— Examiner report, October/November 2023, 0973/41 Q4(a)(ii) (Cambridge)
The majority of candidates gave carbon dioxide as the name of the gas produced during anaerobic respiration in yeast. Incorrect answers included oxygen and ethanol.
— Examiner report, October/November 2023, 0973/41 Q4(a)(iii) (Cambridge)
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