Skip to content
Try on iPad

Factors that affect enzyme action: CAIE A‑Level Biology questions

Every CAIE A-Level Biology exam question on 3.2 Factors that affect enzyme action, June 2024 and the specimen papers, with its mark scheme and examiner’s report.

Find questions240
Calculations

240 questions

  1. Q11

    June 2024 · Paper 1

    1 mark3.2 Factors that affect enzyme action
    The whole paper ↗
    June 2024 Paper 1, question 11: The graph shows the trend from an enzyme-catalysed reaction. y x Which labels are correct for the x-axis and y-axis? x-axis y-axis A rate of reaction substrate

  2. Q12

    June 2024 · Paper 1

    1 mark3.2 Factors that affect enzyme action
    The whole paper ↗
    June 2024 Paper 1, question 12: Which statements about the Michaelis–Menten constant (Km) are correct? 1 The higher the Km, the higher the enzyme affinity for the substrate. 2 Km is a measure

  3. Q14

    June 2024 · Paper 1

    1 mark3.2 Factors that affect enzyme action
    The whole paper ↗
    June 2024 Paper 1, question 14: The diagram shows a simple metabolic pathway. W  X  Y  Z The letters W, X, Y and Z represent four different substances. At each step in the diagram the subst

  4. Q3(b)

    June 2024 · Paper 2

    2 marks10.1 Infectious diseases3.2 Factors that affect enzyme action
    The whole paper ↗
    June 2024 Paper 2, question 3(b): HIV has a nucleic acid core of RNA. The virus also contains the enzyme reverse transcriptase. After HIV enters T‑lymphocytes, reverse transcriptase catalyses th

  5. Q6(a)

    Specimen · Paper 4

    3 marks3.2 Factors that affect enzyme action
    The whole paper ↗
    Specimen Paper 4, question 6(a): Tyrosinase is an enzyme involved in the production of melanin. A study was carried out to investigate the effect of an extract of the starfish, Patiria pectinif

  6. Q13

    Specimen · Paper 1

    1 mark3.2 Factors that affect enzyme action
    The whole paper ↗
    Specimen Paper 1, question 13: A student investigated the effect of enzyme concentration on the rate of hydrolysis of protein in milk. When the enzyme and milk were mixed, the protein was hyd

  7. Q15

    Specimen · Paper 1

    1 mark3.2 Factors that affect enzyme action
    The whole paper ↗
    Specimen Paper 1, question 15: The graph shows the effect of temperature on the rate at which the enzyme in a biological washing powder digests and removes fruit juice stains. rate of reactio

  8. Q3(b)(i)

    Specimen · Paper 2

    2 marks3.2 Factors that affect enzyme action
    The whole paper ↗
    Specimen Paper 2, question 3(b)(i): Explain why product inhibition is useful in K. lactis when lactase is acting as an intracellular enzyme, but can be a disadvantage when extracted lactase is use

  9. Q3(b)(ii)

    Specimen · Paper 2

    1 mark3.2 Factors that affect enzyme action
    The whole paper ↗
    Specimen Paper 2, question 3(b)(ii): Suggest how using immobilised lactase for the production of lactose-free milk helps to reduce the problem of product inhibition. [1]

  10. Q3(b)(iii)

    Specimen · Paper 2

    1 mark3.2 Factors that affect enzyme action
    The whole paper ↗
    Specimen Paper 2, question 3(b)(iii): The first large-scale production of lactose-free milk with an immobilised enzyme used lactase trapped in cellulose triacetate fibres. Suggest one feature of cel
All 10 questions on Factors that affect enzyme action, as a list
  1. June 2024, Paper 1, Q11 (1 mark): The graph shows the trend from an enzyme-catalysed reaction. y x Which labels are correct for the x-axis and y-axis? x-axis y-axis A rate of reaction substrate
  2. June 2024, Paper 1, Q12 (1 mark): Which statements about the Michaelis–Menten constant (Km) are correct? 1 The higher the Km, the higher the enzyme affinity for the substrate. 2 Km is a measure
  3. June 2024, Paper 1, Q14 (1 mark): The diagram shows a simple metabolic pathway. W  X  Y  Z The letters W, X, Y and Z represent four different substances. At each step in the diagram the subst
  4. June 2024, Paper 2, Q3(b) (2 marks): HIV has a nucleic acid core of RNA. The virus also contains the enzyme reverse transcriptase. After HIV enters T‑lymphocytes, reverse transcriptase catalyses th
  5. Specimen, Paper 4, Q6(a) (3 marks): Tyrosinase is an enzyme involved in the production of melanin. A study was carried out to investigate the effect of an extract of the starfish, Patiria pectinif
  6. Specimen, Paper 1, Q13 (1 mark): A student investigated the effect of enzyme concentration on the rate of hydrolysis of protein in milk. When the enzyme and milk were mixed, the protein was hyd
  7. Specimen, Paper 1, Q15 (1 mark): The graph shows the effect of temperature on the rate at which the enzyme in a biological washing powder digests and removes fruit juice stains. rate of reactio
  8. Specimen, Paper 2, Q3(b)(i) (2 marks): Explain why product inhibition is useful in K. lactis when lactase is acting as an intracellular enzyme, but can be a disadvantage when extracted lactase is use
  9. Specimen, Paper 2, Q3(b)(ii) (1 mark): Suggest how using immobilised lactase for the production of lactose-free milk helps to reduce the problem of product inhibition. [1]
  10. Specimen, Paper 2, Q3(b)(iii) (1 mark): The first large-scale production of lactose-free milk with an immobilised enzyme used lactase trapped in cellulose triacetate fibres. Suggest one feature of cel

Questions, mark schemes and examiner’s reports are © Cambridge University Press & Assessment, from their published past papers. Plumi isn’t affiliated with any exam board. Want whole papers? Every CAIE A-Level Biology paper.

Rather write your answers by hand on iPad? Plumi marks them against the same mark schemes.