Summary

• Description:

  The PDF document comprises Nyahokakira Cluster II Biology Paper 1 2026 Mock Exam with Marking Scheme. The marking scheme is in a different document.

  It was a KCSE Biology Paper 1 (231/1) examination.

  This paper tests broad core competencies across cell biology, genetics, ecology, plant and animal physiology, and evolutionary mechanisms. A prime resource available for PDF download, it empowers students preparing for national exams to hone their content mastery and evaluate answers using the marking scheme.

  • Month Administered: July 2026
  • Duration: 2 hours
  • Total Marks: 80 marks
  • Number of Questions: 28 questions (Questions 1–28)
  • Structure: Single compulsory section containing short-answer and data-interpretation questions 1 to 28.

  It covers the following topics:

  •   Characteristics of living organisms and classification
  •   Mammalian integumentary system and temperature regulation
  •   Genetics, monohybrid crosses, and ABO blood grouping
  •   Cell organelle specialization and properties of the cell membrane
  •   Microscopy and cell size calculations
  •   Ecology, predation relationships, and energy transfer in food chains
  •   Food test procedures for carbohydrates
  •   Enzyme action and kinetics with temperature changes
  •   Gaseous exchange in unicellular organisms, fish gills, and mammalian lungs
  •   Hydrophyte leaf adaptations
  •   Homeostasis, excretion, and endocrine control in the kidney
  •   Comparative anatomy and evidence for organic evolution (homologous structures)
  •   Reproduction in plants and pollination mechanisms
  •   Locomotion in fish and support in herbaceous plants
  •   Metamorphosis and hormonal regulation in insects
  •   Nervous coordination, brain functions, and reflex arcs
  •   Tropic responses and auxin distribution in plants
• File Size:

  1.03 MB
• Length:

  10 pages
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  Biology
• Posted By:

  Caleb_Peter

Enter your details below to initiate a payment using MPESA.