Secondary 3 Biology

Students will explore the definition and scope of biology, identifying key characteristics of living organisms and applying the scientific method to biological investigations.

Students will learn to use light microscopes to observe and draw plant and animal cells, identifying key organelles.

Students will examine the microscopic components of plant and animal cells and how their organelles facilitate life functions.

Students will investigate the structure of the cell membrane and its role in regulating substance movement.

Students will investigate the physical process of diffusion across biological membranes through experiments and observations.

Students will explore the movement of water across partially permeable membranes and its effects on plant and animal cells.

Students will analyze the process of active transport, understanding its energy requirements and biological significance.

Students will analyze the chemical composition of carbohydrates and their roles as energy sources and structural components.

Students will investigate the diverse structures and functions of proteins, including enzymes, hormones, and structural components.

Students will analyze the chemical composition of fats and their roles in energy storage, insulation, and hormone production.

Students will understand the overall structure and function of the human digestive system.

Students will investigate the processes of digestion occurring in the mouth and stomach, focusing on enzymatic action.

Students will explore the final stages of digestion and the mechanisms of nutrient absorption in the small intestine.

Students will understand the functions of the large intestine in water absorption and the formation of faeces.

Students will learn about the components of a balanced diet and how dietary needs vary based on age, activity, and health conditions.

Students will understand the overall process of photosynthesis, including its inputs, outputs, and importance for life on Earth.

Students will investigate the role of chlorophyll in capturing light energy for photosynthesis and the importance of light.

Students will analyze environmental factors such as light intensity, carbon dioxide concentration, and temperature that limit the rate of photosynthesis.

Students will explore the essential mineral nutrients required by plants and the consequences of their deficiencies.

Students will investigate how roots absorb water and mineral salts from the soil.

Students will investigate the composition of blood, including red blood cells, white blood cells, platelets, and plasma.

Students will examine the structure and function of different types of blood vessels.

Students will investigate the structure of the heart and its role as a double pump in the circulatory system.

Students will explore common cardiovascular diseases, their causes, prevention, and treatment.

Students will understand the structure and function of the respiratory system, including the lungs and air passages.

Students will analyze the physical mechanisms of inhalation and exhalation.

Students will investigate how oxygen and carbon dioxide are exchanged between the alveoli and blood.

Students will analyze the process of aerobic respiration, focusing on the complete breakdown of glucose to release energy.

Students will compare aerobic and anaerobic respiration and their roles in energy release under different conditions.

Students will evaluate the effects of smoking and air pollution on the respiratory system.

Students will understand excretion as a general life process and identify the main excretory organs and the waste products they remove.

Students will understand the overall function of the nervous system in coordinating responses to stimuli.

Students will explore the major parts of the brain and spinal cord and their functions in coordinating responses.

Students will investigate the components of a reflex arc and the importance of reflex actions.

Students will study the structure of the human eye and the process of vision.

Students will explore the endocrine system, hormones, and their roles in regulating body functions.

Students will understand the importance of cell division for growth, repair, and asexual reproduction.

Students will compare and contrast asexual and sexual reproduction strategies in different organisms.

Students will understand the structure and function of the male and female reproductive systems.

Students will be introduced to DNA as the genetic material and its role in carrying hereditary information.

Students will be introduced to basic concepts of inheritance, including dominant and recessive alleles and their expression in traits.

Students will study continuous and discontinuous variation and their genetic basis.

Students will explore how organisms are adapted to their environment and how these adaptations aid survival.

Students will define ecosystems and identify biotic and abiotic factors influencing them.

Students will map the movement of energy through food webs and identify trophic levels.

Students will analyze the efficiency of energy transfer between trophic levels using ecological pyramids.

Students will investigate the cycling of carbon through ecosystems and the atmosphere.

Students will explore the cycling of nitrogen through ecosystems and its importance for living organisms.

Students will study factors affecting population size and growth in ecosystems.

Students will evaluate the effects of air and water pollution on ecosystems and human health.

Students will investigate the causes and consequences of deforestation and habitat destruction.

Students will explore the causes and impacts of climate change on ecosystems and human societies.