Edexcel International AS Biology Exam Questions By Topic

The Importance of Water, Saccharides, Core Practical 1: Estimating the Concentration of Sugars & Starch, Condensation & Hydrolysis, Triglycerides & Ester Bonds

The Need for a Circulatory System, Blood Vessels: Structure & Function, The Cardiac Cycle, The Role of Haemoglobin, Atherosclerosis, Blood Clotting

Reducing Risk Factors of CVD, Dietary Antioxidants & CVD, Core Practical 2: Investigate the Vitamin C Content of Food & Drink, Interpreting Data on Risk Factors, Designing Studies into the Effects of Risk Factors, Perception of Risk vs Actual Risk, Data on Cholesterol & Lipoproteins, Data on Effect of Diet, Treatments for CVD - Benefits & Risks

Properties of Gas Exchange Surfaces, Cell Membranes, Core Practical 3: Investigating Membrane Structure & Permeability, Osmosis, Diffusion, Facilitated Diffusion & Active Transport

Amino Acids, Proteins & Protein Structure, Enzymes - Roles & Modes of Action, Core Practical 4: Investigating the Rate of Enzyme Reactions, Nucleotides, DNA & RNA, Base Pairing

DNA Replication, The Nature of the Genetic Code, How Bases Code for a Polypeptide Chain, Transcription & Translation

Mutations, Patterns of Inheritance & Sex Linkage, Cystic Fibrosis, Genetic Screening, Ethical & Social Issues of Genetic Screening

Cell Theory, Levels of Organisation of Cells, Eukaryotic Cells, The Rough Endoplasmic Reticulum & Golgi, Prokaryotic Cells, Electron Microscopy of Animal Cells, Microscopy: Magnification & Resolution, Core Practical 5 - Light Microscopy

Gene Locus, Meiosis & Variation, Mammalian Gametes, Fertilisation - Mammals, Fertilisation - Flowering Plants, The Cell Cycle & Mitosis, Core Practical 6: Observing the Stages of Mitosis, Calculation of Mitotic Index, Stem Cells & Cell Potency, Cell Specialisation, Post-Transcriptional Changes to mRNA, Gene Interaction & Epigenetics, Polygenic Inheritance & Continuous Variation

Plant Cell Structure, Electron Microscopy of Plant Cells, Starch & Cellulose: Structure & Function, Properties of Cellulose, The Vascular Structure of Plants, Core Practical 7: Identifying Tissue Types Within Stems

Plant-Based Products for Sustainability, Water & Inorganic Ions in Plants, Core Practical 8: Determining the Tensile Strength of Plant Fibres

Bacterial Growth Conditions, Plant Products with Antimicrobial Properties, Core Practical 9: Antimicrobial Properties of Plants, Development of Drugs & Drug Testing

The Three Domains of Life, The Variety of Life, Biodiversity & Endemism, Species Richness & Heterozygosity Index, Index of Biodiversity, Ecological Niches & Adaptations, Hardy-Weinberg Equation, Roles of Seed Banks & Zoos in Conservation