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Theory

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This paper includes MCQ, true/false, and numeric question types.

Note: Q8 was officially deleted from this exam.

Theory Question Paper Official Answer Booklet
Q1 Protein Tertiary Structure Interactions Protein Structure, Folding & FunctionMedium INBO·2026·Q1 — ptsPDF
Q2 Plasmid Processing Enzyme (Gel Electrophoresis) Recombinant DNA & Biotechnology TechniquesMedium INBO·2026·Q2 — ptsPDF
Q3 Membrane Fluidity and Gel-to-Fluid Transition Lipids & Membrane BiochemistryHard INBO·2026·Q3 — ptsPDF
Q4 Conformational Entropy and Free Energy Bioenergetics & Central Metabolism OverviewMedium INBO·2026·Q4 — ptsPDF
Q5 Suppressor tRNA and Stop Codon Readthrough Translation & the Genetic CodeHard INBO·2026·Q5 — ptsPDF
Q6 Gibberellic Acid and Light Effects on Hypocotyl Growth Plant HormonesMedium INBO·2026·Q6 — ptsPDF
Q7 Apical Dominance and Auxiliary Bud Dormancy Plant HormonesEasy INBO·2026·Q7 — ptsPDF
Q9 Phloem Sap Exudation and Light Dependence Phloem Transport & TranslocationMedium INBO·2026·Q9 — ptsPDF
Q10 Rigor Mortis and ATP Depletion Muscle PhysiologyEasy INBO·2026·Q10 — ptsPDF
Q11 Homeotherm Heat Production and Loss Comparative ThermoregulationMedium INBO·2026·Q11 — ptsPDF
Q12 Bat Kidney Morphology and Diet Comparative Osmoregulation & ExcretionHard INBO·2026·Q12 — ptsPDF
Q13 lac Operon Regulation (Glucose and Lactose) Gene Regulation: ProkaryoticMedium INBO·2026·Q13 — ptsPDF
Q14 Cytogenetic Analysis of Sex Chromosome Abnormalities Cell Cycle, Mitosis & MeiosisHard INBO·2026·Q14 — ptsPDF
Q15 Food Hoarding vs Fat Storage Under Uncertainty Foraging & Anti-Predator BehaviorMedium INBO·2026·Q15 — ptsPDF
Q16 Navigation in Migratory Animals Orientation & NavigationEasy INBO·2026·Q16 — ptsPDF
Q17 Global Hydrological Cycle Turnover Times EcologyHard INBO·2026·Q17 — ptsPDF
Q18 Carbon Cycle Flux Ranking EcologyMedium INBO·2026·Q18 — ptsPDF
Q19 Speckled Wood Butterfly Territorial Strategy Aggression, Territoriality & Social StructureMedium INBO·2026·Q19 — ptsPDF
Q20 Migration Cost Minimization Strategies Orientation & NavigationEasy INBO·2026·Q20 — ptsPDF
Q21 Convergent Evolution in Desert Plants Evidence for EvolutionEasy INBO·2026·Q21 — ptsPDF
Q22 Cladogram Group Classification Phylogenetic Trees & CladisticsMedium INBO·2026·Q22 — ptsPDF
Q23 Gene Size, Introns and mRNA Analysis Transcription & RNA ProcessingMedium INBO·2026·Q23 — ptsPDF
Q24 Transcription Factor Activation Pathway Gene Regulation: Eukaryotic & EpigeneticsHard INBO·2026·Q24 — ptsPDF
Q25 Degenerate Oligonucleotide Probe Design Recombinant DNA & Biotechnology TechniquesHard INBO·2026·Q25 — ptsPDF
Q26 Protein Molecules in a Hepatocyte Protein Structure, Folding & FunctionHard INBO·2026·Q26 — ptsPDF
Q27 Restriction Enzyme Mapping Recombinant DNA & Biotechnology TechniquesHard INBO·2026·Q27 — ptsPDF
Q28 Gaucher Disease GCase Mutation Analysis Protein Structure, Folding & FunctionHard INBO·2026·Q28 — ptsPDF
Q29 Proteolytic Enzyme Substrate Specificity Enzyme Kinetics & RegulationHard INBO·2026·Q29 — ptsPDF
Q30 Plant Biomolecular Composition Matching Carbohydrate Chemistry & BiologyMedium INBO·2026·Q30 — ptsPDF
Q31 Plant Cell Water Potential Components Water Transport & TranspirationHard INBO·2026·Q31 — ptsPDF
Q32 Thermal Acclimation and Photosynthesis in Arctic Plants Calvin Cycle, Photorespiration & C4/CAM BiochemistryHard INBO·2026·Q32 — ptsPDF
Q33 Plant Photosynthetic Temperature Response Calvin Cycle, Photorespiration & C4/CAM BiochemistryMedium INBO·2026·Q33 — ptsPDF
Q34 Auxin-Mediated Phototropism Experiments Plant HormonesMedium INBO·2026·Q34 — ptsPDF
Q35 Calvin Cycle Intermediate Stoichiometry Calvin Cycle, Photorespiration & C4/CAM BiochemistryHard INBO·2026·Q35 — ptsPDF
Q36 Mammalian Vision: Skull Morphology and Retinal Composition Mammalian Comparative AnatomyHard INBO·2026·Q36 — ptsPDF
Q37 Nernst Equation Membrane Potential Nervous System PhysiologyMedium INBO·2026·Q37 — ptsPDF
Q38 Corticotropin Releasing Hormone in Pregnancy and Amphibian Development Endocrine System PhysiologyHard INBO·2026·Q38 — ptsPDF
Q39 Enterocyte Ion Transport and Oral Rehydration Digestive & Metabolic PhysiologyMedium INBO·2026·Q39 — ptsPDF
Q40 Organ Weight-Specific Basal Metabolic Rate Comparative ThermoregulationMedium INBO·2026·Q40 — ptsPDF
Q41 Bohr and Haldane Effects in Fetal-Maternal Gas Exchange Respiratory PhysiologyHard INBO·2026·Q41 — ptsPDF
Q42 Parthenogenesis in Whiptail Lizards Reproductive PhysiologyMedium INBO·2026·Q42 — ptsPDF
Q43 Polygenic Inheritance of Plant Height Quantitative Genetics, Heritability & InbreedingHard INBO·2026·Q43 — ptsPDF
Q44 RFLP Pedigree Analysis Recombinant DNA & Biotechnology TechniquesHard INBO·2026·Q44 — ptsPDF
Q45 Multiple Alleles in Mallard Duck Plumage Extensions of Mendelian InheritanceMedium INBO·2026·Q45 — ptsPDF
Q46 Epistatic Coat Color in Rodents Gene Interactions: Epistasis & Complementation AnalysisHard INBO·2026·Q46 — ptsPDF
Q47 X-linked Lesch-Nyhan Syndrome Probability Sex Determination & Sex-Linked InheritanceHard INBO·2026·Q47 — ptsPDF
Q48 Genetic Drift Simulation in Small Populations Genetic Drift, Gene Flow & MutationMedium INBO·2026·Q48 — ptsPDF
Q49 Types of Natural Selection on Allele Frequency Natural Selection: Modes & FitnessMedium INBO·2026·Q49 — ptsPDF
Q50 Tropical Seedling Shade Tolerance EcologyMedium INBO·2026·Q50 — ptsPDF
Q51 Risk-Sensitive Foraging Under Energy Stress Foraging & Anti-Predator BehaviorHard INBO·2026·Q51 — ptsPDF
Q52 Leaf Solar Tracking and Radiation Tropisms & Nastic MovementsMedium INBO·2026·Q52 — ptsPDF
Q53 American Redstart Song Modes and Pairing Animal CommunicationMedium INBO·2026·Q53 — ptsPDF
Q54 Island vs Mainland Hare Population Dynamics EcologyMedium INBO·2026·Q54 — ptsPDF
Q55 Digger Bee Alternative Mating Strategies Mating Systems & Sexual SelectionHard INBO·2026·Q55 — ptsPDF
Q56 Cichlid Fish Agonistic Behavior and Weight Asymmetry Aggression, Territoriality & Social StructureHard INBO·2026·Q56 — ptsPDF
Q57 Adaptive Significance of Bird Behavioral Traits Animal CommunicationMedium INBO·2026·Q57 — ptsPDF
Q58 Mollusc Clade Feature Identification Invertebrate Body Plans IIMedium INBO·2026·Q58 — ptsPDF
Q59 Animal Phylogeny Evolutionary Traits Phylogenetic Trees & CladisticsHard INBO·2026·Q59 — ptsPDF