Summary

• Description:

  The MS Word document comprises Nakuru North Joint Mock 2024 Biology Paper 1 Exam with Answers and Marking Scheme. The PDF version is also available upon your request. The marking scheme is in a different document.

  It is a KCSE Biology Paper 1 (231/1) Theory Joint Mock Examination that was administered in July/August 2024 for schools in Nakuru North Sub-County.

  • Duration: 2 Hours
  • Total Marks: 80
  • Number of Questions: 29

  The paper required candidates to answer all questions in the spaces provided in the question paper.

  It covered the following topics:

  • Gaseous exchange and ventilation in organisms
  • Respiratory structures in fish and insects
  • Nucleic acids and complementary base pairing
  • Structure and function of pollen tubes during fertilization
  • Components of mammalian blood involved in clotting
  • Structure and functions of the mammalian ear including balance and hearing
  • Role of cofactors and metallic cofactors in cell metabolism
  • Photosynthesis experiments involving carbon dioxide absorption and starch testing
  • Parasitic organisms and diseases they cause
  • Physiological processes such as feeding in insectivorous plants and mineral absorption in plant roots
  • Adaptations of mammalian reproductive organs including the testis and uterus
  • Hormonal regulation in homeostasis including ADH and aldosterone
  • Functions of different parts of the brain controlling voluntary and involuntary actions
  • Anaerobic respiration in muscles and formation of lactic acid
  • Plant growth regulators and parthenocarpy
  • Natural selection and adaptation illustrated by peppered moth varieties
  • Adaptations of mammalian lungs for efficient gaseous exchange
  • Biological sampling apparatus such as bait traps, specimen bottles, and pitfall traps
  • Common features shared by birds and mammals
  • Adaptations of the lungs and ileum for absorption
  • Human blood groups and reasons for universal recipients
  • Placenta as an endocrine gland and protection of the embryo during pregnancy
  • Environmental impacts of dumping untreated sewage into water bodies
  • Structure and functions of the pelvic girdle including the obturator foramen
  • Connective tissues including tendons and ligaments
  • Plant excretory products such as quinine and caffeine
  • Biological reactions involving digestion and formation of chemical bonds
  • Components of a simple reflex arc in nervous coordination
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  BIOLOGY

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