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A Levels Biology (9700)•9700/11/O/N/24
Question 8 from 9700/11/O/N/24

Explanation

Hydrolysis products of triglycerides visualized in scatter plots

Steps:

  • Hydrolysis breaks triglyceride into one glycerol and three fatty acids.
  • Examine diagram to identify fatty acid properties (e.g., chain length, saturation).
  • Compare scatter plots: each should plot three points representing the fatty acids' distinct features.
  • Select plot matching the diagram's fatty acid composition.

Why B is correct:

  • B displays three unique points for the fatty acids, aligning with triglyceride structure yielding diverse chains per biochemical definition.

Why the others are wrong:

  • A shows only two points, underrepresenting the three fatty acids.
  • C plots four points, overstating components beyond hydrolysis yield.
  • D shows identical points, ignoring fatty acid variability in the diagram.

Final answer: B

Topic: Carbohydrates and lipids

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