Summary

• Description:

  The MS Word document comprises LENANA SCHOOL NAIROBI INTERNAL EXAMS Biology Paper 2 2026 Mock Exam with Answers (Marking Scheme). The PDF version is also available upon your request. The marking scheme is in a different document.

  It was a KCSE Biology Paper 2 examination.

  This paper tests higher-order biological inquiry, data presentation, physiological pathways, and genetics through structured and extended essay questions. Key areas evaluated include enzyme kinetics, energy flow in food webs, human reproduction, and comparative anatomy in evolution.

  • Total Marks: 80
  • Number of Questions: 8 (Questions 1-8)
  • Structure: Section A (40 marks, questions 1-5) and Section B (40 marks, compulsory data analysis question 6 and essay questions 7-8).

  It covers the following topics:

  • Section A:
    • Energy flow in ecosystems and organelle functions in photosynthesis
    • Biochemical pathways of carbon (IV) oxide transport in erythrocytes and role of calcium in blood clotting
    • Human reproductive anatomy: Ovarian cycle, folliculogenesis, and hormonal coordination
    • Mendelian inheritance: Monohybrid crosses involving seed texture and phenotypic ratios
    • Trophic dynamics: Food web analysis, consumer classification, and trophic hierarchy
  • Section B:
    • Enzyme kinetics: Graphical plotting and analysis of catalase activity across temperature gradients
    • Factors influencing photosynthesis and chemical digestion of carbohydrates in humans
    • Evolutionary biology: Mechanisms of natural selection and comparative anatomy as evidence for evolution
• File Size:

  618.95 KB
• Length:

  10 pages
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  Biology
• Posted By:

  Caleb_Peter

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