Summary

• Description:

  The MS Word document comprises Mmalina Joint Trial Biology Paper 1 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 231/1 examination.

  This paper tests core conceptual knowledge across cell physiology, human anatomy, genetics, ecology, and plant physiological processes. Designed to evaluate foundational competencies, it prepares learners thoroughly for KCSE Paper 1 theory exams.

  • Month Administered: July 2026
  • Duration: 2 Hours
  • Total Marks: 80
  • Number of Questions: 27 (Questions 1 - 27)
  • Structure: Single section consisting of 27 compulsory structured short-answer questions covering the entire secondary school biology curriculum.

  It covers the following topics:

  • Ecology: Specimen collection apparatus and capture-recapture method
  • Genetics and biotechnology: Gene sequencing, chromosomal mutation (inversion), and monohybrid phenotypic ratios
  • Respiration: Seed respiration experiments and respiratory quotient in plants
  • Health and disease: Causative agents of amoebiasis and whooping cough, and lung cancer etiology/treatment
  • Irritability and response: Pupillary accommodation in mammalian eye, tactic vs. tropic responses, and plant hormones
  • Nutrition and photosynthesis: Environmental factors influencing photosynthetic rates
  • Growth and development: Insect metamorphosis hormones, water role in seed germination, and apical dominance
  • Evolution: Lamarckian evolutionary theory critique
  • Reproduction: Functions of human testis, counter-current heat exchange, flower morphology, and modes of reproduction in microorganisms
  • Enzymes: Substrate concentration dynamics and enzyme saturation
  • Support and locomotion: Human foot skeletal anatomy (tarsals/metatarsals) and plant support tissues (parenchyma, collenchyma)
  • Excretion and homeostasis: Nitrogenous waste excretion in animals, urea synthesis, and waste elimination in plants
  • Classification: Kingdom Protista/Protoctista and cell specialization
  • Transport: Diffusion dynamics, thromboplastin and blood clotting mechanisms, and vascular bundle anatomy
  • Cell division: Meiotic division and chromosome reduction mechanisms
• File Size:

  1.14 MB
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  Biology
• Posted By:

  Caleb_Peter

Enter your details below to initiate a payment using MPESA.