Summary

• Description:

  The MS Word document comprises Mumias West Sub-County Joint Evaluation Biology Paper 1 May 2026 Pre-Mock Exam with Marking Scheme. The marking scheme is in a different document.

  It was a KCSE Biology Paper 1 examination. This paper tests candidates' understanding of core biological concepts spanning cell biology, ecology, genetics, physiology, and reproduction through 30 structured short-answer questions.

  • Month Administered: May 2026
  • Duration: 2 hours
  • Total Marks: 80
  • Number of Questions: 30 (Questions 1–30)
  • Structure: All questions compulsory; answers written in spaces provided

  It covers the following topics:

  • Magnification and microscopy
  • Adaptations of root hair cells
  • Aerobic and anaerobic respiration (glucose vs. sucrose, lactic acid, oxygen debt)
  • Gene mutation, disorders caused by gene mutations, and mutagenic factors
  • Importance of nutrition and excretion in living organisms
  • Functions of microscope parts (objective lens, diaphragm)
  • Environmental factors affecting stomatal transpiration
  • Male reproductive system (epididymis, seminal vesicle, interstitial cells)
  • Dentition — carnivore teeth and adaptations
  • Nucleic acids (RNA identification, structure, and cellular location)
  • Classification of organisms and ecology
  • Importance of life processes (nutrition, excretion)
• File Size:

  540.73 KB
• Length:

  9 pages
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  BIOLOGY
• Posted By:

  Caleb_Peter

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