AQA AS BIOLOGY 7401/2 PAPER 2 MARK
SCHEME CERTIFICATION SCRIPT 2026
QUESTIONS WITH SOLUTIONS GRADED A+
◍ Capsid.
Answer: The protein coat surrounding the genetic material of a virus.
◍ Log graph explanation.
Answer: Explanation of the graph's phases and their relation to enzyme
inhibition and cell death.
◍ Aseptic techniques.
Answer: Procedures to prevent contamination, including sterilization and
hand washing.
◍ ELISA control line.
Answer: The control line in an ELISA test, showing the movement of the
patient's blood sample.
◍ Explain why cheese has the highest energy content.
Answer: Fat has the highest number of hydrogen atoms/ many hydrogen
atoms Can be oxidised many times and reduce many NAD/produce many
NADH
◍ Golgi apparatus functions.
Answer: Modification and packaging of proteins into vesicles.
◍ WHO measurement recommendation.
Answer: Debate on whether WHO's measurements should be adjusted based
on data.
◍ Africa malaria calculation.
Answer: Calculation of the total affected population based on given
, percentages.
◍ Fused cells for monoclonal antibodies.
Answer: Use of fused cells for continuous production of monoclonal
antibodies.
◍ Why are line graphs used?.
Answer: Both variables are continuous X axis is independent variable Y axis
in dependant variable Bar graphs uses discrete data
◍ Comparing two liver tissues damaged and not damaged.
Answer: - GAPS / HOLEZ between cells - cell death
◍ Tissue fluid return affected by drug.
Answer: Proteins move into tissue fluid, increasing water potential and
causing less water to move back into capillaries.
◍ Villi damage effects.
Answer: Loss of surface area, reduced absorption, and disrupted water
potential gradient.
◍ Magnification question.
Answer: Calculation of magnification based on given measurements.
◍ Attachment protein.
Answer: Protein on a virus that binds to complementary receptors on T
helper cells.
◍ Minimum depth question.
Answer: Calculation of volume based on given radius and length.
◍ What is apical dominance mediated by.
Answer: Auxin Takes place in all plants
◍ What properties of the inner mitochondrial membrane allow chemioosmosjs
to occur?.
Answer: Large surface areaImpermeable to protons ( therefore, H+ uses
carrier proteins ) Presence of ATP synthase
SCHEME CERTIFICATION SCRIPT 2026
QUESTIONS WITH SOLUTIONS GRADED A+
◍ Capsid.
Answer: The protein coat surrounding the genetic material of a virus.
◍ Log graph explanation.
Answer: Explanation of the graph's phases and their relation to enzyme
inhibition and cell death.
◍ Aseptic techniques.
Answer: Procedures to prevent contamination, including sterilization and
hand washing.
◍ ELISA control line.
Answer: The control line in an ELISA test, showing the movement of the
patient's blood sample.
◍ Explain why cheese has the highest energy content.
Answer: Fat has the highest number of hydrogen atoms/ many hydrogen
atoms Can be oxidised many times and reduce many NAD/produce many
NADH
◍ Golgi apparatus functions.
Answer: Modification and packaging of proteins into vesicles.
◍ WHO measurement recommendation.
Answer: Debate on whether WHO's measurements should be adjusted based
on data.
◍ Africa malaria calculation.
Answer: Calculation of the total affected population based on given
, percentages.
◍ Fused cells for monoclonal antibodies.
Answer: Use of fused cells for continuous production of monoclonal
antibodies.
◍ Why are line graphs used?.
Answer: Both variables are continuous X axis is independent variable Y axis
in dependant variable Bar graphs uses discrete data
◍ Comparing two liver tissues damaged and not damaged.
Answer: - GAPS / HOLEZ between cells - cell death
◍ Tissue fluid return affected by drug.
Answer: Proteins move into tissue fluid, increasing water potential and
causing less water to move back into capillaries.
◍ Villi damage effects.
Answer: Loss of surface area, reduced absorption, and disrupted water
potential gradient.
◍ Magnification question.
Answer: Calculation of magnification based on given measurements.
◍ Attachment protein.
Answer: Protein on a virus that binds to complementary receptors on T
helper cells.
◍ Minimum depth question.
Answer: Calculation of volume based on given radius and length.
◍ What is apical dominance mediated by.
Answer: Auxin Takes place in all plants
◍ What properties of the inner mitochondrial membrane allow chemioosmosjs
to occur?.
Answer: Large surface areaImpermeable to protons ( therefore, H+ uses
carrier proteins ) Presence of ATP synthase
