IB Biology SL - 2024
Questionbank
The IB Biology SL (Standard 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
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
RV Free
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
RV Free
2.7 - DNA Replication, Transcription, & Translation
Replication, Complementarity, Transcription, Translation, Codons, Meselson & Stahl, Taq Polymerase, Genetic Code
RV Free
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
RV Gold
3.3 - Meiosis
Crossing Over, Meiosis I & II, Gametes, Genetic Variation, Non-Disjunction, Chorionic Villi Sampling, Amniocentesis
RV Gold
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
RV Gold
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
RV Gold
Topic 5
Evolution & Biodiversity
Topic 5 All
All Questions in Topic 5 Evolution & Biodiversity
RV Gold
5.1 - Evidence for Evolution
Fossil Record, Selective Breeding, Homologous Structures, Gradual Divergence, Continuous Variation, Melanism
RV Gold
5.2 - Natural Selection
Natural Selection, Sources of Variation, Adaptations, Finches, Antibiotic Resistance
RV Gold
5.3 - Classification & Biodiversity
Binomial System, Taxonomy, Domains, Kingdoms, Reclassification, Plant & Animal Phyla, Chordata Classes, Dichotomous Key
RV Gold
5.4 - Cladistics
Clade, Cladograms, Analogous & Homologous Traits, Figwort Reclassification
RV Gold
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
RV Gold
6.3 - Immune System
Pathogens, Blood Clotting, Antibodies, Antigens, Antibiotics, Florey & Chain's Experiment, HIV, Phagocytes, Lymphocytes
RV Gold
6.4 - Respiratory System
Gas Exchange, Respiratory Anatomy, Pneumocytes, Diaphragm, Intercostal Muscles, Lung Cancer, Emphysema, Spirometer
RV Gold
6.5 - Neuronal System
Threshold, Action & Resting Potentials, Neurons, Myelination, Synapses, Neurotransmitters, Neonicotinoids, Oscilloscopes
RV Gold
6.6 - Endocrine & Reproductive Systems
Glands, Insulin, Glucagon, Thyroxin, Leptin, Melatonin, Sex Hormones & Menstrual Cycle, Diabetes, IVF, Anatomy, Harvey
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 Affects 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
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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