IB Biology HL - Questionbank
The IB Biology HL Questionbank is a great source of practice questions, coming from the entire syllabus! Each question comes with a clear markscheme and solution video, with an experienced IB teacher going through the question step-by-step. The questions are organized by topic and arranged by difficulty, making it the perfect resource for studying a particular concept.
Topic 1 All
All Questions in Topic 1 Cell Biology
Stem Cells, Cell Theory, & Microscopy
Functions of Life, Cell Theory & Exceptions, Differentiation, Stem Cells, SA:V, Magnification, Stargardt's Disease
Ultrastructure of Eukaryotes & Prokaryotes
Cell Ultrastructure, Prokaryotic & Eukaryotic cells, Functions of Organelles, Binary Fission, Micrographs, Microscopes
Plasma Membrane Structure & Function, Amphipathic Properties, Cholesterol, Davson-Danielli & Singer-Nicolson models
Osmosis, Passive & Active Transport, Endocytosis, Exocytosis, Sodium/Potassium pump, Osmolarity Experiments
The Origin of Cells
Origin of Cells, Universal code, Endosymbiotic theory, Pasteur and Spontaneous Generation
Mitosis, Interphase, Cytokinesis, Cyclins, Supercoiling, Mutagens & Oncogenes, Smoking & Cancer, Mitotic Index
Topic 2 All
All Questions in Topic 2 Molecular Biology
Molecules to Metabolism
Carbon Tetravalency, Biomolecules, Metabolism, Anabolism, Catabolism, Hydrolysis of Macromolecules, Monomers & Polymers
Polarity, Hydrogen Bonding, Adhesion, Cohesion, Thermal Properties, Hydrophilic & Hydrophobic, Transport of Substances
Carbohydrates & Lipids
Carbohydrate & Lipid Structures & Functions, Condensation & Hydrolysis, BMI, Nomograms, Lipids & Health, Energy Storage
Protein Structure & Functions, Peptide Bond, Condensation & Hydrolysis, pH and Temperature, Proteomics
Enzyme Structure & Function, Active Site, Enzyme Activity Experiments, Denaturation, Immobilization, Lactose-Free Milk
Structure of DNA & RNA
DNA & RNA Structure, Complementarity, Watson & Crick, Nucleotide structure, Antiparallel nature
DNA Replication, Transcription, & Translation
Replication, Complementarity, Transcription, Translation, Codons, Meselson & Stahl, Taq Polymerase, Genetic Code
Aerobic & Anaerobic Respiration, ATP, Lactic Acid Fermentation, Alcohol Fermentation, Respirometer Experiments
Light, Pigments, Photosynthesis, Photolysis, Chromatography, Limiting Factors Experiment, Absorption & Action Spectrum
Topic 3 All
All Questions in Topic 3 Genetics
Genes, Alleles, and Genomes
Genes, Locus, Alleles, Mutation, Genome, Human Genome Project, Sickle Cell Anaemia, Genbank
Plasmid, Histone, Homologous, Haploid & Diploid, Karyotype, Autosomes & Sex Chromosomes, Autoradiography, Down, BLAST
Crossing Over, Meiosis I & II, Gametes, Genetic Variation, Non-Disjunction, Chorionic Villi Sampling, Amniocentesis
Mendel, Zygote, Dominant & Recessive, Co-dominant, Diseases, Sex-linkage, Mutagens, ABO groups, Punnett Grid, Pedigree
Genetic Modification & Biotechnology
Gel Electrophoresis, PCR, DNA Profiling, Cloning, Genetic Modification, GMO, Rooting Experiment, Bt Crops
Topic 4 All
All Questions in Topic 4 Ecology
Species, Communities, and Ecosystems
Populations, Autotroph & Heterotroph, Consumer, Detritivore & Saprotroph, Mesocosm, Chi-squared Test, Quadrat Sampling
Light Energy, Chemical Energy, Biomass, Energy Loss, Trophic Levels, Pyramid of Energy, Energy Flow and Nutrient Cycling
Carbon Dioxide, Carbon Cycle, Methane, Peat, Coal, Oil & Gas, Fossils, Corals, Limestone, Air Monitoring, Carbon Fluxes
Greenhouse Gases, Long-Wave Radiation, Global Temperature & Climate, Coral Reefs, the Precautionary Principle
Evolution & Biodiversity
Topic 5 All
All Questions in Topic 5 Evolution & Biodiversity
Evidence for Evolution
Fossil Record, Selective Breeding, Homologous Structures, Gradual Divergence, Continuous Variation, Melanism
Natural Selection, Sources of Variation, Adaptations, Finches, Antibiotic Resistance
Classification & Biodiversity
Binomial System, Taxonomy, Domains, Kingdoms, Reclassification, Plant & Animal Phyla, Chordata Classes, Dichotomous Key
Clade, Cladograms, Analogous & Homologous Traits, Figwort Reclassification
Topic 6 All
All Questions in Topic 6 Human Physiology
Peristalsis, Villi, Nutrient Absorption, Digestion of Starch, Dialysis Tubing, Digestive System Anatomy, Enzymes
Arteries, Veins, Capillaries, Pressure, Pacemaker, Heart Structure & Regulation, Harvey, Cardiac Cycle, Occlusion
Pathogens, Blood Clotting, Antibodies, Antigens, Antibiotics, Florey & Chain's Experiment, HIV, Phagocytes, Lymphocytes
Gas Exchange, Respiratory Anatomy, Pneumocytes, Diaphragm, Intercostal Muscles, Lung Cancer, Emphysema, Spirometer
Threshold, Action & Resting Potentials, Neurons, Myelination, Synapses, Neurotransmitters, Neonicotinoids, Oscilloscopes
Endocrine & Reproductive Systems
Glands, Insulin, Glucagon, Thyroxin, Leptin, Melatonin, Sex Hormones & Menstrual Cycle, Diabetes, IVF, Anatomy, Harvey
Topic 7 All
All Questions in Topic 7 Nucleic Acids
Details of DNA Structure & Replication
Nucleosome, Replication Enzymes, Non-Coding DNA, X-Ray Diffraction, Franklin & Wilkins, Sequencing, Hershey & Chase
Details of Transcription & Gene Expression
Epigenetics, mRNA Modification, Splicing, Gene Expression, Promoter, Methylation & Acetylation
Details of Translation
Initiation, Elongation, Termination, Free & Bound Ribosomes, Levels of Protein Structure, t-RNA Activating Enzyme
Metabolism, Cell Respiration & Photosynthesis
Topic 8 All
All Questions in Topic 8 Metabolism, Cell Respiration & Photosynthesis
Control of Metabolism
Pathways, Activation Energy, End-Product, Competitive & Non-Competitive Inhibition, Anti-Malarials, Rate of Reaction
Details of Cell Respiration
Oxidation & Reduction, E-carriers, Glycolysis, Link Reaction, Krebs cycle, ETC, ATP Synthesis, Mitochondrion, Tomography
Details of Photosynthesis
Light-Dependent/Independent Reactions, Photosystem I & II, Photolysis, ATP Synthesis, Chloroplast, NADP, Rubisco, Calvin
Topic 9 All
All Questions in Topic 9 Plant Biology
Transport in the Xylem of Plants
Gas Exchange, Xylem Structure, Mineral & Water Uptake, Desert & Halophyte Plants, Potometer, Transpiration Experiments
Transport in the Phloem of Plants
Sources & Sinks, Hydrostatic Pressure, Phloem Structure, Ephid experiments
Growth in Plants
Meristem, Shoot Apex, Auxin, Phototropism, Micropropagation
Reproduction in Plants
Control of Flowering, Pollination & Seed Dispersal, Short- & Long-day Plants, Seed & Flower Structures, Germination
Genetics & Evolution
Topic 10 All
All Questions in Topic 10 Genetics & Evolution
Causes of Variation in Meiosis
Crossing Over, Chiasmata, Independent Assortment, Random Orientation
Dihybrid Crosses & Linked Genes
Linked Genes, Discrete & Continuous Variation, Polygenic Traits, Chi-squared, Morgan, Dihybrid Crosses, Recombinants
Gene Pools & Speciation
Allele Frequency, Selection Types, Reproductive Isolation, Speciation, Gradualism & Punctuated Equilibrium, Polyploidy
Topic 11 All
All Questions in Topic 11 Animal Physiology
Antibody Production & Vaccination
Lymphocyte, Memory & Plasma Cells, Histamine, Vaccine, Monoclonal Antibodies, Jenner, Blood Compatibility, Epidemiology
Joints, Antagonistic Pairs, Muscle Fibres, Myofibrils, Sarcomeres, Actin & Myosin, Sliding Filament Theory, Insect Leg
The Kidney & Osmoregulation
Osmoregulators & Osmoconformers, Malpighian system, Nephron, Nitrogenous Wastes, Control of Function, Kidney Structure
Spermatogenesis, Oogenesis, Fertilization, Implantation, HCG, Placenta, Oxytocin, Sperm & Egg Structures
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Frequently Asked Questions
What is the IB Biology HL Questionbank?
The IB Biology HL Questionbank is a comprehensive set of IB Biology exam style questions, categorised into syllabus topic and concept, and sorted by difficulty of question. The bank of exam style questions are accompanied by high quality step-by-step marksBioes and video tutorials, taught by experienced IB Biology teachers. The IB Biology HL Question bank is the perfect exam revision resource for IB students looking to practice IB Biology exam style questions in a particular topic or concept in their IB Biology Higher Level course.
Where should I start in the Biology HL Questionbank?
The IB Biology HL Questionbank is designed to help IB students practice Biology HL exam style questions in a specific topic or concept. Therefore, a good place to start is by identifying a concept that you would like to practice and improve in and go to that area of the Biology HL Question bank. For example, if you want to practice Biology HL exam style questions covering Cell Division, you can go to Biology HL Topic 1 (Cell Biology) and go to the Cell Division area of the question bank. On this page there is a carefully designed set of IB Biology HL exam style questions, progressing in order of difficulty from easiest to hardest. If you’re just getting started with your revision, you could start at the top of the page with the easiest questions, or if you already have some confidence, you could start at the medium difficulty questions and progress down.
How should I use the Biology HL Questionbank?
The Biology HL Questionbank is perfect for revising a particular topic or concept, in-depth. For example, if you wanted to improve your knowledge of Cell Division, there are over 20 IB Biology HL exam style questions focused specifically on this concept. Alternatively, Revision Village also has an extensive library of Biology HL Practice Exams, where students can simulate the length and difficulty of an IB exam with the Mock Exam sets, as well as Biology HL Key Concepts, where students can learn and revise the underlying theory, if missed or misunderstood in class.
What if I finish the Biology HL Questionbank?
With an extensive and growing library of full length IB Biology HL exam style questions in the Biology HL Question bank, finishing all of the questions would be a fantastic effort, and you will be in a great position for your final exams. If you were able to complete all the questions in the Biology HL Question bank, then a popular option would be to go to the Biology HL Practice Exams section on Revision Village and test yourself with the Mock Exam Papers, to simulate the length and difficulty of an actual IB Biology HL exam.
More IB Biology HL Resources
All the questions you could need! Sorted by topic and arranged by difficulty, with mark schemes and video solutions for every question.
Choose your revision tool! Contains topic quizzes for focused study, Revision Village mock exams covering the whole syllabus, and the revision ladder to precisely target your learning.
Helpful refreshers summarizing exactly what you need to know about the most important concepts covered in the course.
Full worked solutions to all past paper questions, taught by experienced IB instructors.