Biology Principles

Science Laboratory Technology · Level 6  ·  6 Chapters

Compiled by: Kevin Rotich

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What Biology Principles covers

How plants and animals sense, feed, move, reproduce and excrete is the subject of Biology Principles in Science Laboratory Technology Level 6. Communication in organisms covers neurons, nerve impulses, the central and peripheral nervous systems, sensory organs, the endocrine system and growth responses. Nutrition covers digestion, absorption, deficiency diseases, the leaf and photosynthesis. Transport covers circulatory systems, gaseous exchange in mammals and fish, vascular tissues, water and mineral uptake, transpiration, translocation and stomata. Support and locomotion cover muscles, skeletons, bone formation and joints, reproduction covers plant and animal systems, and excretion covers plant products, the mammalian kidney and homeostasis. Learners support this with experiments and dissection.

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Careers after Biology Principles

Understanding how living systems work isn’t just about passing exams - it opens doors to many practical, well-paid roles across Kenya’s health, agriculture, research and environmental sectors. Below are some of the real places where the hands-on abilities you develop in this unit are put to work.

  • County referral hospital pathology laboratories - you run safe, accurate experiments on nervous and endocrine systems to support diagnostic tests, earning a salary as a clinical laboratory technologist.
  • University biology research labs in Nairobi, Eldoret or Kisumu - you design and conduct experiments on sensory organs, muscle types and circulatory systems, earning research stipends or contracts as a laboratory assistant or graduate researcher.
  • Agricultural extension service field stations in Kiambu, Meru or Nakuru - you measure plant growth, water/mineral uptake and translocation, providing data that help farmers optimise irrigation and fertiliser use, earning as an extension officer or freelance agronomy consultant.
  • Seed production and certification facilities in Nakuru County - you identify seed and fruit structures, test dispersal adaptations and perform meiosis studies to ensure high-quality seed lots, earning as a seed technologist or quality-control supervisor.
  • Veterinary diagnostic laboratories in Mombasa and Naivasha - you dissect laboratory animals and examine reproductive systems to diagnose livestock diseases, earning as a veterinary lab technician or animal health analyst.
  • Food-processing quality-assurance labs in Thika and Machakos - you analyse digestive enzymes and nutritional content of raw materials, ensuring product safety and labeling accuracy, earning as a QA officer or food-science analyst.
  • Pharmaceutical research and development units in Nairobi’s industrial parks - you perform endocrine-gland and muscle-type experiments that feed drug-discovery pipelines, earning as a biotech laboratory scientist or R&D associate.
  • Wildlife rehabilitation centres in Tsavo, Aberdare or the coastal forests - you study circulatory and gaseous-exchange systems of rescued mammals and birds, providing medical care and earning as a wildlife health technician.
  • Secondary-school science laboratories in urban and rural districts - you lead student dissections of flowers, roots, shoots and laboratory animals, building the next generation of scientists and earning as a science teacher or lab coordinator.
  • Environmental monitoring units in coastal counties and the Great Rift Valley - you conduct experiments on gaseous exchange in aquatic and terrestrial organisms to assess ecosystem health, earning as an environmental analyst or field ecologist.
  • Biotech start-ups focused on plant tissue culture in Kiambu and Nakuru - you apply knowledge of plant anatomy, water uptake and translocation to develop disease-free planting material, earning equity or salaries as a tissue-culture technologist.
  • Medical research institutes conducting hormone-therapy trials in Nairobi - you safely handle endocrine-gland experiments, contributing to clinical trial data and earning as a laboratory coordinator or clinical research associate.

Mastering these laboratory skills means you can move confidently between hospitals, farms, research hubs and conservation sites, turning curiosity into a sustainable career that improves health, food security and the environment across Kenya. Keep experimenting - the next breakthrough could be yours!

Chapters

What Biology Principles covers: 35 main topics in 6 chapters

1. Analyse communication in plants and animals

  1. 1.1 Neurons communication
  2. 1.2 Transmission of nervous in plants and impulse animals
  3. 1.3 Central nervous system (CNS)
  4. 1.4 Peripheral nervous system (PNS)
  5. 1.5 Structure and functions of sensory organs
  6. 1.6 Endocrine system
  7. 1.7 Tropic and tactic growth responses

2. Apply nutrition in plants and animals

  1. 2.1 Types of nutrition: in plants and
  2. 2.2 Process of digestion, absorption, assimilation, and egestion
  3. 2.3 Nutritional deficiency diseases
  4. 2.4 Morphology and functions of the leaf
  5. 2.5 Process of photosynthesis

3. Apply transport in plants and animals

  1. 3.1 Types of circulatory systems
  2. 3.2 Components of the circulatory systems
  3. 3.3 Gaseous exchange surfaces in animals
  4. 3.4 Mechanisms of breathing in mammals
  5. 3.5 Gaseous exchange in fish
  6. 3.6 Vascular tissues in plants
  7. 3.7 Water and mineral uptake in plants
  8. 3.8 Transpiration in plants
  9. 3.9 Translocation
  10. 3.10 Mechanisms of opening and closing of stomata

4. Analyse support and locomotion in animals

  1. 4.1 Types of muscles
  2. 4.2 Mechanism of muscle action
  3. 4.3 Types of skeletons
  4. 4.4 Bone formation
  5. 4.5 Bones of axial skeleton
  6. 4.6 Bones of endoskeleton
  7. 4.7 Joints

5. Analyse reproduction in plants and animals

  1. 5.1 Reproductive system in plants
  2. 5.2 Reproductive system in animals

6. Apply excretion in plants and animals

  1. 6.1 Plant excretory products
  2. 6.2 Excretory system in mammals
  3. 6.3 Kidney structure and functions animals
  4. 6.4 Homeostasis

Revise this unit

3 more for this unit

Beyond the syllabus

Other units in Module VI