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IB Biology HL - 2024 - Questionbank

The IB Biology HL (Higher Level) 2024 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

Cell Biology

Topic 1 All

All Questions in Topic 1 Cell Biology

1.1 - Stem Cells, Cell Theory, & Microscopy

Functions of Life, Cell Theory & Exceptions, Differentiation, Stem Cells, SA:V, Magnification, Stargardt's Disease

1.2 - Ultrastructure of Eukaryotes & Prokaryotes

Cell Ultrastructure, Prokaryotic & Eukaryotic cells, Functions of Organelles, Binary Fission, Micrographs, Microscopes

1.3 - Membrane Structure

Plasma Membrane Structure & Function, Amphipathic Properties, Cholesterol, Davson-Danielli & Singer-Nicolson models

1.4 - Membrane Transport

Osmosis, Passive & Active Transport, Endocytosis, Exocytosis, Sodium/Potassium pump, Osmolarity Experiments

1.5 - The Origin of Cells

Origin of Cells, Universal code, Endosymbiotic theory, Pasteur and Spontaneous Generation

1.6 - Cell Division

Mitosis, Interphase, Cytokinesis, Cyclins, Supercoiling, Mutagens & Oncogenes, Smoking & Cancer, Mitotic Index

Topic 2

Molecular Biology

Topic 2 All

All Questions in Topic 2 Molecular Biology

RV Free

2.1 - Molecules to Metabolism

Carbon Tetravalency, Biomolecules, Metabolism, Anabolism, Catabolism, Hydrolysis of Macromolecules, Monomers & Polymers

RV Free

2.2 - Water

Polarity, Hydrogen Bonding, Adhesion, Cohesion, Thermal Properties, Hydrophilic & Hydrophobic, Transport of Substances

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2.3 - Carbohydrates & Lipids

Carbohydrate & Lipid Structures & Functions, Condensation & Hydrolysis, BMI, Nomograms, Lipids & Health, Energy Storage

RV Free

2.4 - Proteins

Protein Structure & Functions, Peptide Bond, Condensation & Hydrolysis, pH and Temperature, Proteomics

RV Free

2.5 - Enzymes

Enzyme Structure & Function, Active Site, Enzyme Activity Experiments, Denaturation, Immobilization, Lactose-Free Milk

RV Free

2.6 - Structure of DNA & RNA

DNA & RNA Structure, Complementarity, Watson & Crick, Nucleotide structure, Antiparallel nature

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2.7 - DNA Replication, Transcription, & Translation

Replication, Complementarity, Transcription, Translation, Codons, Meselson & Stahl, Taq Polymerase, Genetic Code

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2.8 - Cell Respiration

Aerobic & Anaerobic Respiration, ATP, Lactic Acid Fermentation, Alcohol Fermentation, Respirometer Experiments

RV Free

2.9 - Photosynthesis

Light, Pigments, Photosynthesis, Photolysis, Chromatography, Limiting Factors Experiment, Absorption & Action Spectrum

RV Free

Topic 3

Genetics

Topic 3 All

All Questions in Topic 3 Genetics

RV Gold

3.1 - Genes, Alleles, and Genomes

Genes, Locus, Alleles, Mutation, Genome, Human Genome Project, Sickle Cell Anaemia, Genbank

RV Gold

3.2 - Chromosomes

Plasmid, Histone, Homologous, Haploid & Diploid, Karyotype, Autosomes & Sex Chromosomes, Autoradiography, Down, BLAST

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3.3 - Meiosis

Crossing Over, Meiosis I & II, Gametes, Genetic Variation, Non-Disjunction, Chorionic Villi Sampling, Amniocentesis

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3.4 - Inheritance

Mendel, Zygote, Dominant & Recessive, Co-dominant, Diseases, Sex-linkage, Mutagens, ABO groups, Punnett Grid, Pedigree

RV Gold

3.5 - Genetic Modification & Biotechnology

Gel Electrophoresis, PCR, DNA Profiling, Cloning, Genetic Modification, GMO, Rooting Experiment, Bt Crops

RV Gold

Topic 4

Ecology

Topic 4 All

All Questions in Topic 4 Ecology

RV Gold

4.1 - Species, Communities, and Ecosystems

Populations, Autotroph & Heterotroph, Consumer, Detritivore & Saprotroph, Mesocosm, Chi-squared Test, Quadrat Sampling

RV Gold

4.2 - Energy Flow

Light Energy, Chemical Energy, Biomass, Energy Loss, Trophic Levels, Pyramid of Energy, Energy Flow and Nutrient Cycling

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4.3 - Carbon Cycling

Carbon Dioxide, Carbon Cycle, Methane, Peat, Coal, Oil & Gas, Fossils, Corals, Limestone, Air Monitoring, Carbon Fluxes

RV Gold

4.4 - Climate Change

Greenhouse Gases, Long-Wave Radiation, Global Temperature & Climate, Coral Reefs, the Precautionary Principle

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Topic 5

Evolution & Biodiversity

Topic 5 All

All Questions in Topic 5 Evolution & Biodiversity

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5.1 - Evidence for Evolution

Fossil Record, Selective Breeding, Homologous Structures, Gradual Divergence, Continuous Variation, Melanism

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5.2 - Natural Selection

Natural Selection, Sources of Variation, Adaptations, Finches, Antibiotic Resistance

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5.3 - Classification & Biodiversity

Binomial System, Taxonomy, Domains, Kingdoms, Reclassification, Plant & Animal Phyla, Chordata Classes, Dichotomous Key

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5.4 - Cladistics

Clade, Cladograms, Analogous & Homologous Traits, Figwort Reclassification

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Topic 6

Human Physiology

Topic 6 All

All Questions in Topic 6 Human Physiology

RV Gold

6.1 - Digestive System

Peristalsis, Villi, Nutrient Absorption, Digestion of Starch, Dialysis Tubing, Digestive System Anatomy, Enzymes

RV Gold

6.2 - Circulatory System

Arteries, Veins, Capillaries, Pressure, Pacemaker, Heart Structure & Regulation, Harvey, Cardiac Cycle, Occlusion

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6.3 - Immune System

Pathogens, Blood Clotting, Antibodies, Antigens, Antibiotics, Florey & Chain's Experiment, HIV, Phagocytes, Lymphocytes

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6.4 - Respiratory System

Gas Exchange, Respiratory Anatomy, Pneumocytes, Diaphragm, Intercostal Muscles, Lung Cancer, Emphysema, Spirometer

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6.5 - Neuronal System

Threshold, Action & Resting Potentials, Neurons, Myelination, Synapses, Neurotransmitters, Neonicotinoids, Oscilloscopes

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6.6 - Endocrine & Reproductive Systems

Glands, Insulin, Glucagon, Thyroxin, Leptin, Melatonin, Sex Hormones & Menstrual Cycle, Diabetes, IVF, Anatomy, Harvey

RV Gold

Topic 7

Nucleic Acids

Topic 7 All

All Questions in Topic 7 Nucleic Acids

RV Gold

7.1 - Details of DNA Structure & Replication

Nucleosome, Replication Enzymes, Non-Coding DNA, X-Ray Diffraction, Franklin & Wilkins, Sequencing, Hershey & Chase

RV Gold

7.2 - Details of Transcription & Gene Expression

Epigenetics, mRNA Modification, Splicing, Gene Expression, Promoter, Methylation & Acetylation

RV Gold

7.3 - Details of Translation

Initiation, Elongation, Termination, Free & Bound Ribosomes, Levels of Protein Structure, t-RNA Activating Enzyme

RV Gold

Topic 8

Metabolism, Cell Respiration & Photosynthesis

Topic 8 All

All Questions in Topic 8 Metabolism, Cell Respiration & Photosynthesis

RV Gold

8.1 - Control of Metabolism

Pathways, Activation Energy, End-Product, Competitive & Non-Competitive Inhibition, Anti-Malarials, Rate of Reaction

RV Gold

8.2 - Details of Cell Respiration

Oxidation & Reduction, E-carriers, Glycolysis, Link Reaction, Krebs cycle, ETC, ATP Synthesis, Mitochondrion, Tomography

RV Gold

8.3 - Details of Photosynthesis

Light-Dependent/Independent Reactions, Photosystem I & II, Photolysis, ATP Synthesis, Chloroplast, NADP, Rubisco, Calvin

RV Gold

Topic 9

Plant Biology

Topic 9 All

All Questions in Topic 9 Plant Biology

RV Gold

9.1 - Transport in the Xylem of Plants

Gas Exchange, Xylem Structure, Mineral & Water Uptake, Desert & Halophyte Plants, Potometer, Transpiration Experiments

RV Gold

9.2 - Transport in the Phloem of Plants

Sources & Sinks, Hydrostatic Pressure, Phloem Structure, Aphid experiments

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9.3 - Growth in Plants

Meristem, Shoot Apex, Auxin, Phototropism, Micropropagation

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9.4 - Reproduction in Plants

Control of Flowering, Pollination & Seed Dispersal, Short- & Long-day Plants, Seed & Flower Structures, Germination

RV Gold

Topic 10

Genetics & Evolution

Topic 10 All

All Questions in Topic 10 Genetics & Evolution

RV Gold

10.1 - Causes of Variation in Meiosis

Crossing Over, Chiasmata, Independent Assortment, Random Orientation

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10.2 - Dihybrid Crosses & Linked Genes

Linked Genes, Discrete & Continuous Variation, Polygenic Traits, Chi-squared, Morgan, Dihybrid Crosses, Recombinants

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10.3 - Gene Pools & Speciation

Allele Frequency, Selection Types, Reproductive Isolation, Speciation, Gradualism & Punctuated Equilibrium, Polyploidy

RV Gold

Topic 11

Animal Physiology

Topic 11 All

All Questions in Topic 11 Animal Physiology

RV Gold

11.1 - Antibody Production & Vaccination

Lymphocyte, Memory & Plasma Cells, Histamine, Vaccine, Monoclonal Antibodies, Jenner, Blood Compatibility, Epidemiology

RV Gold

11.2 - Movement

Joints, Antagonistic Pairs, Muscle Fibres, Myofibrils, Sarcomeres, Actin & Myosin, Sliding Filament Theory, Insect Leg

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11.3 - The Kidney & Osmoregulation

Osmoregulators & Osmoconformers, Malpighian system, Nephron, Nitrogenous Wastes, Control of Function, Kidney Structure

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11.4 - Sexual Reproduction

Spermatogenesis, Oogenesis, Fertilization, Implantation, HCG, Placenta, Oxytocin, Sperm & Egg Structures

RV Gold

Option C

Ecology & Conservation

Option C All

All Questions in Option C Ecology & Conservation

RV Gold

C.1 - Species & Communities

Distribution of Species, Keystone Species, Position in Community, Interactions, Competition within the Habitat

RV Gold

C.2 - Communities & Ecosystems

Trophic Levels, Food Chains & Webs, Energy to Biomass, Climate & Disturbance Impact on Ecosystems, Closed Ecosystems

RV Gold

C.3 - Impacts of Humans on Ecosystems

Alien & Invasive Species, Biomagnification of Pollutants, Micro- and Macroplastics in Oceans

RV Gold

C.4 - Conservation of Biodiversity

Uses of Indicator Species, Conservation, Factors Affecting Biodiversity, Components of Biodiversity

RV Gold

C.5 - Population Ecology

Sampling Techniques, Growth Curve & Carrying Capacity of Populations, Limiting Factors

RV Gold

C.6 - Nitrogen & Phosphorus Cycles

Role of Bacteria in the Nitrogen Cycle, Agriculture and the Phosphorus Cycle, N vs P Cycle, Eutrophication

RV Gold

Data-based, Practical-based, and Extended Response Questions

All

All Questions in Data-based, Practical-based, and Extended Response Questions

RV Gold

Data-based Questions

Data-based Questions On All Topics

RV Gold

Practical-based Questions

Practical-based Questions On All Topics

RV Gold

Extended Response Questions

Extended Response Questions On All Topics

RV Gold

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More IB Biology HL - 2024 Resources

Questionbank

All the questions you could need! Sorted by topic and arranged by difficulty, with mark schemes and video solutions for every question.

Practice Exams

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.

New

Key Concepts

Helpful refreshers summarizing exactly what you need to know about the most important concepts covered in the course.

Past Papers

Full worked solutions to all past paper questions, taught by experienced IB instructors.

Frequently Asked Questions

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.

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.

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.

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.