Summary

• Description:

  The MS Word document comprises Form 3 Biology Paper 2 Mid Term 2 2026 Exam with Marking Scheme. The PDF version is also available upon your request. The marking scheme is in a different document.

  This exam assesses Form 3 students' grasp of cell biology, ecological relationships, gaseous exchange, classification of organisms, and enzyme-controlled reactions — key competencies that mirror the depth and style of KCSE Biology Paper 2 questions.

  • Duration: 2 Hours
  • Number of Questions: 8 questions (Questions 1–8)
  • Structure: Two sections — Section A (40 marks, answer all questions), Section B (answer Question 6 compulsory and either Question 7 or 8)

  It covers the following topics:

  • Section A
    • Cell organelles — identification, function, and chemical composition (chloroplast focus)
    • Gaseous exchange structures in Amoeba, grasshopper, and bony fish (gill structure and adaptation)
    • Ecology — food webs, trophic levels, biomass, and decomposers in a savannah ecosystem
    • Specimen collection techniques — pooter, sweep net, and chloroform usage
    • Classification of arthropods — Diplopoda, Insecta, Crustacea, and Arachnida
  • Section B
    • Enzyme activity — effect of temperature on salivary amylase, graph plotting, and interpretation
    • Digestion — neutralisation of hydrochloric acid, acidic digestive enzymes, and factors affecting enzyme reactions
    • Adaptation of hydrophytes to photosynthetic function
    • Adaptation of the mammalian ileum to absorption
    • Adaptation of the mammalian heart to its function
• File Size:

  401.67 KB
• Length:

  8 pages
• Category:

  Exams
• Level:

  Form 3
• Subject:

  BIOLOGY
• Posted By:

  Caleb_Peter

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