· 16 min read
What is the difference between diffusion and active transport?
Compare diffusion vs active transport in IB Biology, including gradients, ATP, membrane proteins, examples, mechanisms, and exam-answer guidance.
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· 16
What is the difference between an allele and a gene?
Learn the difference between a gene and an allele, how both relate to DNA and inheritance, and how to answer allele vs gene questions in IB Biology.
· 16
What is the difference between genotype and phenotype?
Learn the difference between genotype and phenotype for IB Biology, including alleles, environmental effects, Punnett ratios, examples, and exam terminology.
· 16
Why do antibiotics not work on viruses?
Learn why antibiotics do not work on viruses, compare bacterial and viral structures, and build a precise, exam-ready IB Biology explanation.
· 16
What is the difference between aerobic and anaerobic respiration?
Compare aerobic vs anaerobic respiration, including oxygen use, stages, locations, products and ATP yield for IB Biology exam preparation.
· 17
What is the difference between a phenotype and an ecological niche
Learn phenotype vs ecological niche for IB Biology, with precise definitions, examples, syllabus links, exam comparisons, and common mistakes explained.
· 17
Why do species compete for the same niche?
Learn why niche overlap causes competition, how competitive exclusion works, and how to answer IB Biology ecology exam questions accurately.
· 14
What is the difference between mitosis and binary fission?
Compare mitosis vs binary fission, including cells involved, chromosome separation, stages, outcomes, similarities, and IB Biology exam advice.
· 18
Why does biodiversity matter for ecosystem stability?
Learn how species diversity increases ecosystem resistance, resilience and functional stability, with mechanisms and exam advice for IB Biology.
· 17
What is the difference between an ionic and a covalent bond?
Compare ionic and covalent bonds, how each forms, and how structure explains melting point, conductivity, solubility, and IB exam answers clearly.
· 16
Why do some mutations have no effect at all?
Silent mutations explained for IB Biology: learn how codon degeneracy, neutral changes, gene redundancy and environment can prevent phenotype changes.
· 14
Why does adding a catalyst not get used up in a reaction?
Learn why catalysts are regenerated rather than consumed, how they lower activation energy, and how to explain catalysis in IB Chemistry exams.
· 16
What is the difference between an acid and a base?
Learn the difference between acids and bases in IB Chemistry, including proton transfer, conjugate pairs, pH, strength, examples, and exam tips.
· 16
Why does temperature affect reaction rate?
Learn why temperature affects reaction rate through collision theory, activation energy, Maxwell-Boltzmann curves, and IB Chemistry exam language.
· 16
Why are noble gases unreactive?
Learn why noble gases are unreactive through electron configuration, ionization energy, periodic trends, exceptions, and IB exam explanations.
· 16
Why does a minimum wage cause unemployment (in theory)
Learn why a binding minimum wage may cause unemployment in theory, using the IB Economics labour market diagram, assumptions, evaluation, and exam advice.
· 15
What is the difference between an empirical and a molecular formula?
Learn the difference between empirical and molecular formulas, calculate each from composition data, and avoid common IB Chemistry exam errors.
· 13
What is the difference Between Monetary and Fiscal Policy?
Learn monetary vs fiscal policy for IB Economics: who controls each, their tools, transmission mechanisms, strengths, limits, and exam use.
· 14
Why do Governments Impose Tariffs?
Learn why governments use tariffs, how import taxes affect stakeholders and welfare, and how to evaluate protectionism clearly in IB Economics exams.
· 13
Why does Inflation Erode Purchasing Power?
Learn why inflation reduces purchasing power, how to calculate real income and real returns, and how to explain the mechanism clearly in IB Economics exams.
· 13
What is the Difference between a Public Good and Private Good?
Learn the public good vs merit good distinction, with examples, market failure mechanisms, diagrams, policies, and practical IB Economics exam technique.
· 12
Why do Monopolies cause a Welfare Loss?
Understand why monopolies create allocative inefficiency and deadweight loss, with clear diagrams, welfare analysis, evaluation, and IB exam advice.
· 13
What is the Difference between GDP and GNI?
Understand GDP vs GNI, the foreign-income adjustment, worked calculations, common errors, and exam-ready analysis for IB Economics students.
· 14
Why does a Currency Depreciate?
Learn why a currency depreciates through foreign exchange demand and supply, key causes, diagrams, examples, and clear IB Economics exam technique.
