Summary

• Description:

  The MS Word document comprises Mmalina Joint Trial Biology Paper 2 2026 Mock Exam with Marking Scheme. The PDF version is also available upon your request. The marking scheme is in a different document.

  It was a KCSE Biology 231/2 examination.

  This exam assesses candidates' advanced analytical, problem-solving, and essay-writing abilities in biological processes, genetics, physiology, and growth kinetics. It features comprehensive data interpretation, graphical analysis, and structured essay questions.

  • Month Administered: July 2026
  • Duration: 2 Hours
  • Total Marks: 80
  • Number of Questions: 8 (Questions 1 - 8)
  • Structure: Section A (40 marks, questions 1-5, compulsory structured questions) and Section B (40 marks, question 6 compulsory data/graph analysis for 20 marks, and an option between essay question 7 or 8 for 20 marks).

  It covers the following topics:

  • Section A
    • Cell biology and cytology: Prokaryotic cell ultrastructure (bacteria/mycoplasma), microscopy, and Golgi apparatus function
    • Mammalian physiology and homeostasis: Carbon (IV) oxide regulation, blood flow, glucose regulation (pancreatic hormones), and plasma roles
    • Genetics: Heterozygote advantage in sickle cell anaemia, codominance in coat colour inheritance, and the Human Genome Project
    • Excretion and osmoregulation: Comparative nephron structure, medullary thickness, and nitrogenous waste excretion in desert/aquatic mammals
    • Growth and sensory response: Auxin concentration effects on shoots and roots, and visual defect correction (hypermetropia)
  • Section B
    • Growth and development: Comparative growth kinetics (continuous vs. discontinuous growth curves), ecdysis, and hormonal control in arthropods
    • Digestion and physiology: Role of proteins/enzymes as metabolic regulators in mammalian digestion
    • Excretion: Adaptations of the mammalian nephron to its functions
    • Reproduction: Spore formation and reproduction in fungi, and double fertilization mechanisms in flowering plants
• File Size:

  295.97 KB
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  Biology
• Posted By:

  Caleb_Peter

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