AQA AS Biology Exam Questions By Topic

Biological Molecules: Key Terms, Biological Molecules: Reactions, Monosaccharides, Glucose, The Glycosidic Bond, Chromatography: Monosaccharides, Disaccharides, Starch & Glycogen, Cellulose, Biochemical Tests: Sugars & Starch, Finding the Concentration of Glucose

Lipids, Phospholipids, Biochemical Tests: Lipids

Amino Acids & the Peptide Bond, Chromatography: Amino Acids, Protein Structure & Function, Protein Interactions, Biochemical Tests: Proteins

Many Proteins are Enzymes, Enzyme Specificity, How Enzymes Work, Required Practical: Measuring Enzyme Activity, Drawing a Graph for Enzyme Rate Experiments, Using a Tangent to Find Initial Rate of Reaction, Limiting Factors Affecting Enzymes: Temperature, Limiting Factors Affecting Enzymes: pH, Limiting Factors Affecting Enzymes: Enzyme Concentration, Limiting Factors Affecting Enzymes: Substrate Concentration, Limiting Factors Affecting Enzymes: Inhibitors, Control of Variables & Uncertainty

Nucleotide Structure & the Phosphodiester Bond, DNA: Structure & Function, RNA: Structure & Function, Ribosomes, The Origins of Research on the Genetic Code, The Process of Semi-Conservative Replication, Calculating the Frequency of Nucleotide Bases, The Watson Crick Model

The Structure of ATP, Hydrolysis & Synthesis of ATP, The Properties of Water, Inorganic Ions

The Cell Theory, Structure of Eukaryotic Cells, Specialisation of Eukaryotic Cells, Eukaryotic Cell Organisation, Structure of Prokaryotic Cells, Prokaryotic v Eukaryotic Cells, Viruses

Methods of studying cells, Microscopy & Drawing Scientific Diagrams, Magnification Calculations, Cell Fractionation & Ultracentrifugation

The Cell Cycle & Interphase, The Stages of Mitosis, Cytokinesis, Required Practical: Identifying Mitotic Stages, Investigating Plant Root Tips, Uncontrolled Cell Division & Cancer, Binary Fission, Viral Particle Replication

The Structure of Cell Membranes, The Cell Surface Membrane, Diffusion, Osmosis, Osmosis in Animal Cells, Required Practical: Investigatng Water Potential, Active Transport & Co-transport, Adaptations for Rapid Transport, Required Practical: Factors Affecting Membrane Permeability

Cell Recognition, Antigens, Phagocytosis, The T Lymphocyte Response, The B lymphocyte Response, Antibodies, Plasma & Memory Cells

Vaccines, Active & Passive Immunity, HIV, Monoclonal Antibodies, Ethical Issues with Vaccines & Monoclonal Antibodies, ELISA

Surface Area to Volume Ratio, Agar Blocks Practical, Adaptation to Facilitate Exchange, SA:V Ratio & Metabolic Rate, Adaptations of Gas Exchange Surfaces, Gas Exchange vs Water Loss

The Human Gas Exchange System, Dissecting the Gas Exchange System, Microscopy & Gas Exchange Surfaces, Investigating Gas Exchange, The Alveolar Epithelium, Ventilation & Gas Exchange, The Effects of Lung Disease, Pollution & Smoking Data, Risk Factor Data, Correlations & Causal Relationships

Digestion, Enzymes in Digestion, Enzyme Rate Practical, Mechanisms of Absorption, Modelling Absorption

Mass Transport, Haemoglobin Structure, The Role of Haemoglobin, The Oxyhaemoglobin Dissociation Curve, The Bohr Effect, Adaptations in Haemoglobin

Mammalian Circulation, The Human Heart, The Cardiac Cycle, Investigating Heart Rate, Blood Vessels, Capillaries & Tissue Fluid, Cardiovascular Disease Data, Required Practical: Dissecting Mass Transport Systems

Transpiration, Potometer, Movement in the Phloem, The Mass Flow Hypothesis, Evaluating the Mass Flow Hypothesis, Tracer & Ringing Experiments

Prokaryotic DNA, Eukaryotic DNA, Mitochondria & Chloroplast DNA, Genes, Genetic Loci, The Triplet Code, Non-Coding DNA

The Genome, The Structure of RNA, Transcription, Eukaryotic and Prokaryotic Transcription, Translation, Nucleic Acid & Amino Acid Sequence Comparison

Genetic Mutations, Mutations in Chromosome Number, Meiosis, Meiosis in Animal & Plant cells, Meiosis: Sources of Genetic Variation, Meiosis Under a Microscope, Comparing Meiosis & Mitosis

Genetic Diversity, Using Logarithms When Investigating Bacteria, Natural Selection, Directional & Stabilising Selection, Environmental Adaption, Required Practical: Aseptic Techniques

Courtship, Phylogenetic Classification, Hierarchy of the Taxa, Evolutionary Relationships

Biodiversity Within a Community, Species Richness, Index of Diversity, Conservation & Farming, Investigating Diversity, Random Sampling, Mean & Standard Deviation, Quantitative Investigations of Variation, Genetic Relationships Between Organisms