Summary

• Description:

  The MS Word document comprises KCSE 2026 Biology Paper 1 Prediction Paper with Answers (Set 1). The PDF version is also available upon your request. The marking scheme is in a different document.

  It was a KCSE Biology Paper 1 prediction examination designed to prepare candidates for the national assessment.

  This paper tests essential biological theory across cell biology, physiology, human anatomy, genetics, ecology, and evolutionary mechanisms.

  • Month Administered: May 2026
  • Duration: 2 Hours
  • Total Marks: 80
  • Number of Questions: 27 (Questions 1 - 27)
  • Structure: Single compulsory section containing 27 short-answer and structured data-response questions.

  It covers the following topics:

  • Characteristics of Living Organisms (Nutrition and respiration/excretion processes)
  • Cell Biology and Microscopy (Field of view cell size and magnification calculations)
  • Cell Physiology (Plasmolysis and turgidity in plant epidermal cells, osmosis, water relations)
  • Nutrition in Mammals and Plants (Tooth structure and pulp cavity, stomach musculature, diastema, carnassial adaptations)
  • Enzymes and Metabolic Regulators (Protein regulatory roles)
  • Transport in Plants and Animals (Transpiration significance, carbon (IV) oxide transport, blood grouping and transfusion compatibility)
  • Gaseous Exchange and Respiration (Respiratory muscles, lung surface area adaptations, respirometer function and soda lime role)
  • Growth and Development (Role of gibberellins in germination)
  • Ecology (Capture-recapture fish population estimation, biological control of weeds, eutrophication)
  • Physiological Energetics (Carbohydrate vs. lipid energy yield during exercise)
  • Immunity (Active immunity mechanisms)
  • Excretion and Homeostasis (Thermoregulation via sweating, negative feedback mechanisms)
  • Reproduction in Plants and Animals (Insect pollination adaptations, male reproductive anatomy, spermatogenesis, prostate gland)
  • Genetics (Crossing over during meiosis, sex-linked inheritance of haemophilia, gene concept, discontinuous variation)
  • Coordination and Drug Abuse (Mineral ions in impulse transmission, neurobiological effects of substance abuse)
  • Biotechnology (Genetic modification in crops)
  • Sense Organs (Gross eye anatomy and functions)
• File Size:

  2.51 MB
• Length:

  11 pages
• Category:

  KCSE Prediction Papers
• Level:

  Form 4
• Subject:

  Biology
• Posted By:

  Caleb_Peter

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