Summary

• Description:

  The PDF document comprises The Elites Jet Biology Paper 3 2025 Mock Exam with Marking Scheme.

  It is a 231/3 Biology Paper 3 Pre-Mock (March 2025) examination.

  • Duration: 1¾ Hours
  • Total Marks: 40
  • Number of Questions: 3 (Questions 1–3)
  • Marking Scheme: The marking scheme is in a different document.

  It covers the following topics:

  • Food tests and enzyme action on proteins (egg white digestion setup using solutions L1 and L2, dilute hydrochloric acid, and a 37°C water bath)
  • Effect of temperature on enzymes (comparison between a boiled enzyme solution and an unboiled one)
  • Human digestion (identifying secretory cells responsible for enzyme secretion and hydrochloric acid production in the gut)
  • Solutions and cell biology (types of solutions formed by proteins in water and their role in cells)
  • Enzymes in living tissues (reaction between liver tissue and a liquid reagent, observations, and factors that increase reaction rate)
  • Blood sugar regulation (organs involved in maintaining normal blood glucose levels)
  • Classification using a dichotomous key (identifying plant specimens based on leaf features such as venation, margin, and shape)
  • Plant classification (identifying the sub-division of Kingdom Plantae from observable features)
  • Reproduction and adaptation (comparing reproductive structures of two plant specimens and how they influence survival)
  • Stem types (identifying the type of stem in given plant specimens)
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  BIOLOGY

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