Topics 1-4 – Exam Paper – 35% of marks
Topics 5-8 – Exam Paper – 35% of marks
Topics 1-8 – Exam Paper – 30% of marks
Topic 1: Biological molecules
Carbohydrates, lipids, proteins; Enzymes; DNA and RNA; ATP, water, inorganic ions
Topic 2: Cells
Cell structure; Cell division; Transport across cell membranes; The immune system
Topic 3: Organisms exchange substances with their environment
Gas exchange; Digestion and absorption; The heart and blood transport in animals; Water and glucose transport in plants.
Topic 4: Genetic information, variation and relationships between organisms
DNA, genes and chromosomes; Protein synthesis; Genetic diversity by mutation or meiosis Classification and taxonomy.
Topic 5: Energy transfer in and between organisms
Photosynthesis; Respiration; Energy and ecosystems; Nutrient cycles
Topic 6: Organisms respond to changes in their internal and external environments
Control of Heart Rate; The nervous system and receptors; Muscles; Control of body temperature, blood glucose and blood water.
Topic 7: Genetics, populations, evolution and ecosystems
Genetic inheritance; Evolution and natural selection; Ecosystems and ecology.
Topic 8: The control of gene expression
Control of gene expression; Using genome projects; Gene technologies and genetic engineering
Students will also complete 12 required practicals over the two years including: Investigation into the effect of a named variable on the rate of an enzyme-controlled reaction; Production of a dilution series of a solute to produce a calibration curve with which to identify the water potential of plant tissue; Dissection of animal or plant gas exchange or mass transport system.