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IB Biology · Nov 15, 2025 · 7 min read

IB Biology: The Bond That Holds Amino Acids Together

IB Biology guide to the peptide bond: how amino acids link via condensation, how hydrolysis breaks it, and what exam answers should include.

IB Biology · Nov 15, 2025 · 6

IB Biology: What Is Homeostasis? Mechanisms & Examples

IB Biology homeostasis explained: meaning, negative feedback mechanisms, and real-life examples (temperature, glucose, water, pH) for exams.

IB Physics · Nov 15, 2025 · 7

IB Physics: What Is Terminal Velocity?

IB Physics terminal velocity explained simply: force balance, graphs, factors, and exam tips. Learn faster with RevisionDojo notes and questions.

IB Biology · Nov 15, 2025 · 6

IB Biology: Why Water Matters in Metabolic Reactions

IB Biology guide to why water is vital for metabolic reactions: solvent power, hydrolysis, temperature stability, and transport, with with exam tips.

IB Physics · Nov 15, 2025 · 7

IB Physics: Why Sound Travels at Different Speeds

IB Physics explains why sound travels at different speeds in solids, liquids, and gases, using elasticity, density, and temperature for exam success.

IB Physics · Nov 15, 2025 · 7

IB Physics: Relationship Between Frequency and Period

IB Physics made simple: learn the relationship between frequency and period, use f = 1/T confidently, and avoid the most common exam mistakes.

IB Physics · Nov 15, 2025 · 7

IB Physics: What “Work” Really Means

IB Physics students: learn what “work” means, how W = Fd cosθ works, common mistakes, and how to nail exam questions with RevisionDojo.

IB Biology · Nov 15, 2025 · 7

IB Biology: What Is Osmosis? Exam Guide

IB Biology osmosis explained clearly: definition, hypotonic vs hypertonic, plant cells, IA ideas, and exam tips with RevisionDojo practice links.

IB Biology · Nov 15, 2025 · 6

IB Biology: Trophic Levels, Energy Flow & Examples

IB Biology trophic levels explained with clear food chain examples, energy flow (10% rule), and exam tips to master ecosystems fast.

IB Physics · Nov 15, 2025 · 7

IB Physics: What Is the SI Unit of Force?

IB Physics guide to the SI unit of force: the newton (N). Learn 1 N = 1 kg·m/s², avoid common mistakes, and prep smarter for exams.

IB Physics · Nov 15, 2025 · 7

IB Physics: Speed vs Velocity (And Why It Matters)

IB Physics speed vs velocity explained clearly: scalars vs vectors, distance vs displacement, graphs, misconceptions, and exam tips for top marks.

IB Physics · Nov 15, 2025 · 6

IB Physics: Scalar vs Vector Quantities Explained

IB Physics scalar vs vector quantities made simple: definitions, examples, common mistakes, and exam tips with RevisionDojo practice links.

IB Biology · Nov 15, 2025 · 7

IB Biology: What Is the Function of Mitochondria?

IB Biology guide to the function of mitochondria: ATP production, structure, endosymbiosis, and exam tips with RevisionDojo practice tools.

IB Physics · Nov 15, 2025 · 7

IB Physics: Why Specific Heat Really Matters

IB Physics specific heat explained with Q=mcΔT, exam tips, IA ideas, and RevisionDojo links to notes, Questionbank, and data booklet practice.

IB Biology · Nov 15, 2025 · 6

IB Biology: Ecological Succession Stages & Examples

IB Biology guide to ecological succession: primary vs secondary, key stages, and examples you can use in exam answers and data questions.

IB Biology · Nov 15, 2025 · 2

How Do Vaccines Work? A Clear Explanation of Immunity & Protection

Understand how vaccines trigger immunity, how the body builds protection, and why vaccination is essential.

IB Physics · Nov 15, 2025 · 7

IB Physics: Find Acceleration From Velocity and Time

IB Physics guide: learn how to find acceleration from velocity and time using a = Δv/Δt, v-t graphs, sign rules, and exam-style habits.

IB Biology · Nov 15, 2025 · 9

IB Biology: Population Density vs Population Distribution

IB Biology guide to population density vs population distribution: learn definitions, patterns, examples, and exam tips for data questions and IAs.

IB Chemistry · Nov 15, 2025 · 6

Le Chatelier’s Principle in IB Chemistry (Explained)

IB Chemistry guide to Le Chatelier’s Principle: learn how equilibrium shifts with concentration, pressure, and temperature, plus exam tips and pitfalls.

IB Biology · Nov 15, 2025 · 6

IB Biology: DNA Structure Explained (Double Helix + Bases)

IB Biology DNA structure explained: double helix, nucleotides, base pairing, and how genetic information works. Includes exam tips and RevisionDojo links.

IB Biology · Nov 15, 2025 · 6

IB Biology: Photosynthesis vs Cellular Respiration

IB Biology guide to how photosynthesis differs from cellular respiration: equations, energy flow, organelles, gases, and exam tips for SL and HL.

IB Physics · Nov 15, 2025 · 8

IB Physics: What Is the Unit for Energy?

IB Physics students: learn the unit for energy (joule), how it links to work, power, and circuits, plus exam traps and quick checks.

IB Physics · Nov 15, 2025 · 7

IB Physics: How Resistance Affects Current

IB Physics guide to how resistance affects current in circuits. Learn Ohm’s law, common misconceptions, exam tips, and IA-ready insights fast.

IB Physics · Nov 15, 2025 · 8

IB Physics: Newton’s First Law of Motion Explained

IB Physics: Newton’s First Law explained with inertia, net force, and exam tips. Learn common traps, examples, and how to draw better FBDs fast.

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      • Computer Science (CS)
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    • French A Lit
    • French ab initio
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      • History (First Exam 2028)
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      • Physics
      • Psychology
      • Psychology (First Exam 2027)
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      • Spanish A Lit
      • Spanish ab initio
      • Spanish B
      • Sports, exercise and health science (SEHS)
      • Theory of Knowledge (TOK)
      • World Religions