United Kingdom · National Curriculum Attainment Targets
Year 12 Biology
An intensive exploration of biological principles ranging from molecular foundations to global ecosystems. This course emphasizes the integration of structure and function while developing the analytical skills required for advanced scientific inquiry.
01Molecular Foundations and Cell Architecture
Investigate the biochemical building blocks of life and the intricate ultrastructure of eukaryotic and prokaryotic cells.
Explore the unique physical and chemical properties of water and its essential role in biological systems.
Examine the diverse structures of monosaccharides, disaccharides, and polysaccharides and their roles in energy storage and structural support.
Investigate the varied structures and functions of triglycerides, phospholipids, and steroids, emphasizing their hydrophobic nature.
Explore the amino acid building blocks, peptide bond formation, and the four levels of protein structure, relating structure to function.
Study enzyme kinetics, factors affecting enzyme activity, and the mechanisms of enzyme inhibition.
Investigate the structure of DNA and RNA, their nucleotide components, and their fundamental roles in heredity and gene expression.
Compare and contrast the fundamental structural differences between prokaryotic and eukaryotic cells.
Investigate the specialized roles of key organelles such as the nucleus, mitochondria, chloroplasts, ER, and Golgi apparatus.
Master the principles of light and electron microscopy, including magnification, resolution, and specimen preparation.
Examine the composition and dynamic nature of the cell membrane, focusing on phospholipids, proteins, and cholesterol.
Investigate the mechanisms of simple diffusion, facilitated diffusion, and osmosis across selectively permeable membranes.
Analyze the energy-dependent processes of active transport, endocytosis, and exocytosis for moving substances against gradients or in bulk.
Explore how cells receive, process, and respond to external signals through various signaling pathways.
Investigate the stages of the cell cycle and the process of mitosis, emphasizing its role in growth and repair.
05Energy Transfers in Organisms
Examine the biochemical pathways of photosynthesis and respiration that power all life on Earth.
Explore the structure and function of ATP as the universal energy currency, and its role in coupled reactions.
Investigate the ultrastructure of chloroplasts and the roles of chlorophyll and accessory pigments in light absorption.
Analyze the processes of cyclic and non-cyclic photophosphorylation, including electron transport and ATP/NADPH production.
Explore the stages of the Calvin cycle, including carbon fixation, reduction, and regeneration of RuBP.
Investigate how light intensity, carbon dioxide concentration, and temperature affect the rate of photosynthesis.
Examine the ultrastructure of mitochondria and the initial stage of respiration, glycolysis, occurring in the cytoplasm.
02Genetic Information and Variation
Explore the storage and expression of genetic information and the mechanisms that generate biological diversity.
Study the historical discovery and the detailed molecular structure of DNA, including nucleotides and phosphodiester bonds.
Examine the enzymes and steps involved in the semi-conservative replication of DNA, ensuring accurate genetic inheritance.
Trace the process of transcription, where genetic information from DNA is copied into messenger RNA (mRNA).
Explore the process of translation, where mRNA is decoded to synthesize proteins, and the characteristics of the genetic code.
Investigate the lac operon as a model for gene regulation in prokaryotes, focusing on induction and repression.
Explore the complex mechanisms of gene regulation in eukaryotes, including transcription factors, epigenetics, and post-transcriptional control.
Investigate different types of gene and chromosomal mutations and their potential effects on protein function and phenotype.
Apply Mendel's laws of segregation and dominance to predict inheritance patterns in monohybrid crosses.
Extend Mendelian principles to dihybrid crosses, demonstrating the law of independent assortment.
Explore complex inheritance patterns such as incomplete dominance, codominance, multiple alleles, and sex-linkage.
Investigate how linked genes on the same chromosome can be separated by crossing over, affecting inheritance patterns.
Learn to construct and interpret pedigrees to determine modes of inheritance for genetic traits and disorders.
Explore how environmental factors can influence gene expression without altering the underlying DNA sequence.
06Ecosystems and Sustainability
Study the flow of energy and the cycling of nutrients within ecosystems and the impact of human activity.
Define ecosystems, biotic and abiotic factors, and trace the flow of energy through trophic levels.
Construct and interpret food chains and complex food webs, identifying the roles of different organisms.
Quantify primary and secondary productivity, and understand how biomass is generated and transferred in ecosystems.
Examine the global carbon cycle, focusing on the roles of photosynthesis, respiration, combustion, and decomposition.
Investigate the nitrogen cycle, including nitrogen fixation, nitrification, denitrification, and the role of microorganisms.
Explore the phosphorus cycle, its slow geological processes, and its importance as a limiting nutrient in ecosystems.
03Exchange and Transport Systems
Analyze how large multicellular organisms overcome surface area to volume ratio constraints through specialized exchange surfaces.
Examine the common features of efficient exchange surfaces, such as large surface area, thinness, and good blood supply.
Investigate the structure and function of the human respiratory system, including the lungs, alveoli, and breathing mechanics.
Compare the specialized gas exchange systems of fish (gills) and insects (tracheal system) and their adaptations to aquatic and terrestrial environments.
Study the structure and function of the mammalian heart, arteries, veins, and capillaries, and the double circulatory system.
Investigate the components of blood (plasma, red blood cells, white blood cells, platelets) and their roles in transport, defense, and clotting.
Examine the structure of hemoglobin and its role in oxygen binding and release, including the oxygen dissociation curve and the Bohr effect.
Explore the formation of tissue fluid, its role in nutrient and waste exchange, and the function of the lymphatic system.
Investigate the macroscopic and microscopic structure of plant organs adapted for transport and exchange.
Examine the cohesion-tension theory of water movement through the xylem, driven by transpiration from leaves.
Investigate the movement of organic solutes (sugars) through the phloem from source to sink, according to the mass flow hypothesis.
Explore how plants respond to environmental stimuli like light, gravity, and touch through tropisms, mediated by plant hormones.
Investigate the structure of neurons, the generation of action potentials, and synaptic transmission.
Explore the organization and functions of the brain, spinal cord, and the somatic and autonomic nervous systems.
04Biodiversity and Evolution
Explore the classification of life and the mechanisms of natural selection that drive evolutionary change.
Define biodiversity at genetic, species, and ecosystem levels, and explore methods for its quantification.
Examine the principles of hierarchical classification, binomial nomenclature, and the three-domain system.
Investigate various lines of evidence supporting the theory of evolution, including fossils, comparative anatomy, embryology, and molecular biology.
Explore Darwin's theory of natural selection, including variation, inheritance, selection pressure, and differential survival.
Differentiate between directional, stabilizing, and disruptive selection, and their effects on population phenotypes.
Investigate other mechanisms of evolution, including genetic drift (bottleneck and founder effects) and gene flow.