Summary

• Description:

  The MS Word document comprises AIC CHAMPION JOINT 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 231/2 examination.

  This structured theory examination evaluates data interpretation, experimental analysis, physiological mechanisms, genetic crosses, and mammalian organ systems.

  • Month Administered: July 2026
  • Total Marks: 80
  • Number of Questions: 8 (Questions 1–8)
  • Structure: Section A (40 marks, compulsory structured questions) and Section B (40 marks; compulsory Question 6 and an essay choice between Question 7 and 8).

  It covers the following topics:

  • Section A
    • Ecological methods: capture-recapture sampling, population size calculations, and sampling assumptions
    • Photosynthesis: chemical equations, light and dark stage conditions, chloroplast pigments, and starch storage
    • Water relations: osmosis experiments using potato cylinders, sucrose solutions, and cheek cell hemolysis
    • Mammalian reproduction: foetal development, extra-embryonic membranes, amniotic fluid, and placenta delivery
    • Genetics: sex-linkage, muscular dystrophy pedigree analysis, Punnett square crosses, and Drosophila melanogaster as a model organism
  • Section B
    • Respiratory physiology: effect of exercise on blood lactic acid concentrations, graphical plotting, oxygen debt kinetics, and anaerobic respiration
    • Homeostasis and excretion: biochemistry of hepatic deamination
    • Sensory reception: structural anatomy and dual functions of the mammalian ear
    • Microscopy: step-by-step procedure for preparing and viewing specimens under a light microscope
    • Floral biology: structural and physiological adaptations of entomophilous flowers
• File Size:

  421.78 KB
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  Biology
• Posted By:

  Caleb_Peter

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