IBBiologyHLContinuity & Change

Continuity & Change (HL IB Biology)

Get ready for your HL IB Biology exams with our revision resources. Find everything you need to revise this topic, so you can go into your exam confident and prepared. Teachers and examiners write all our resources, and they’re designed specifically for each exam board. We regularly update them to match the latest syllabus, so you’ll only revise the most accurate, up-to-date information. Explore the collection below to get started.

DNA Replication

  1. DNA Replication
  2. Electrophoresis & PCR
  3. Electrophoresis & PCR: Applications
  4. Mechanism of DNA Replication (HL)

Protein Synthesis

  1. Transcription in Protein Synthesis
  2. Translation in Protein Synthesis
  3. The Genetic Code
  4. Protein Structure & Mutations
  5. Mechanism of Transcription (HL)
  6. Post-Transcriptional Modification (HL)
  7. Translation & the Proteome (HL)

Mutations & Gene Editing

  1. Gene Mutations
  2. Consequences of Gene Mutations
  3. Mutations & Genetic Variation
  4. Gene Editing (HL)
  5. Conserved Sequences (HL)

Cell & Nuclear Division

  1. Cell Division
  2. Nuclear Division
  3. Mitosis
  4. Mitosis: Skills
  5. Meiosis
  6. Cell Cycle (HL)
  7. Uncontrolled Cell Division & Tumour Formation (HL)
  8. Mitotic Index: Skills (HL)

Gene Expression

  1. Gene Expression (HL)
  2. Regulating Transcription & Translation (HL)
  3. Environment & Gene Expression (HL)
  4. Environment & Gene Expression: Examples (HL)

Water Potential

  1. Osmosis
  2. Osmosis in Cells
  3. Osmosis: Skills
  4. Water Potential (HL)
  5. Water Movement in Plant Tissue (HL)

Reproduction

  1. Sexual & Asexual Reproduction
  2. Sexual Reproduction
  3. The Menstrual Cycle
  4. Fertilisation
  5. Plant Reproduction
  6. Pollination
  7. Seed Dispersal & Germination
  8. Hormones & Puberty (HL)
  9. Gametogenesis (HL)
  10. Fertilisation & Implantation (HL)
  11. Hormones in Pregnancy (HL)
  12. The Placenta (HL)
  13. Hormone Replacement Therapy (HL)

Inheritance

  1. Genetic Inheritance & Genetic Crossing
  2. Inheritance: Terminology
  3. Inheriting Alleles
  4. Sex Determination
  5. Pedigree Charts
  6. Continuous Variation: Skills
  7. Dihybrid Crosses & Unlinked Genes (HL)
  8. Statistical Analysis of Dihybrid Crosses (HL)
  9. Genes & Polypeptides: Skills (HL)
  10. Gene Linkage (HL)
  11. Identifying Recombinants (HL)

Homeostasis

  1. Homeostasis: Maintaining the Internal Environment
  2. Regulation of Blood Glucose
  3. Thermoregulation
  4. Osmoregulation & Excretion (HL)
  5. Production of Urine (HL)
  6. Changes in Blood Supply to Organs (HL)

Natural Selection

  1. Natural Selection & Evolution
  2. Selection Pressures
  3. Selection Pressures: Skills
  4. Gene Pools (HL)
  5. Allele Frequencies: Skills (HL)
  6. Types of Natural Selection (HL)
  7. Hardy-Weinberg Principle (HL)
  8. Artificial Selection (HL)

Stability & Change

  1. Stability in Ecosystems
  2. Ecosystem Stability: Skills
  3. Keystone Species
  4. Sustainability in Ecosystems & Agriculture
  5. Eutrophication
  6. The Effects of Pollution
  7. Restoring Ecosystems
  8. Ecological Succession (HL)
  9. Human Influence on Succession (HL)

Climate Change

  1. Causes of Climate Change
  2. Impact of Climate Change
  3. Carbon Sequestration
  4. Climate Change: Phenology (HL)
  5. Climate Change: Evolution (HL)

DNA Replication

  1. Multiple Choice Questions
  2. Structured Questions

Protein Synthesis

  1. Multiple Choice Questions
  2. Structured Questions

Mutations & Gene Editing

  1. Multiple Choice Questions
  2. Structured Questions

Cell & Nuclear Division

  1. Multiple Choice Questions
  2. Structured Questions

Gene Expression

  1. Multiple Choice Questions
  2. Structured Questions

Water Potential

  1. Multiple Choice Questions
  2. Structured Questions

Reproduction

  1. Multiple Choice Questions
  2. Structured Questions

Inheritance

  1. Multiple Choice Questions
  2. Structured Questions

Homeostasis

  1. Multiple Choice Questions
  2. Structured Questions

Natural Selection

  1. Multiple Choice Questions
  2. Structured Questions

Stability & Change

  1. Multiple Choice Questions
  2. Structured Questions

Climate Change

  1. Multiple Choice Questions
  2. Structured Questions