IB Biology HL Notes for Exam Success

Option D: Human Physiology

Jessica Ytyped

Topic 1: Cell Biology

Dive deep into cellular processes with IB Cell Biology Notes for HL Unit 1. Covers structure, function, membranes, and cell division.

• Explains organelles and biochemical processes clearly
• Includes visuals, diagrams, and definitions
• Ideal for lab prep and multiple-choice practice
• Matches HL command terms and assessment criteria

Jessica Ytyped

Topic 2: Molecular Biology

Understand DNA, proteins, and gene expression with IB Molecular Biology Notes. Ideal for HL learners preparing for exams.

• Covers replication, transcription, translation
• Illustrated pathways and summaries
• Supports Paper 1 quick recall and Paper 2 essays
• Aligns with syllabus focus on molecular structure

Jessica Ytyped

Topic 3: Genetics

Notes on Topic 3: Genetics notes (25 pages). Underlined passages are wording taken directly from markschemes. *Disclaimer: notes are not updated to the latest syllabus, although there is a significant overlap in content

Jessica Ytyped

Topic 4: Ecology

Study relationships in nature with IB Biology Ecology Notes. HL students will grasp core topics like food chains, carbon cycles, and sustainability.

• Covers biomes, populations, energy transfer
• Visual ecosystem models and data charts
• Excellent for Paper 2 short and long answers
• IA support through practical examples

Jessica Ytyped

Topic 5: Evolution and Biodiversity

Notes on Topic 5: Evolution notes (11 pages). Underlined passages are wording taken directly from markschemes. *Disclaimer: notes are not updated to the latest syllabus, although there is a significant overlap in content

Jessica Ytyped

Topic 6: Human Physiology

Students are choosing this more every day

Deepen your understanding of internal systems with IB Human Physiology Notes. Covers hormonal, immune, and digestive functions in HL Biology.

• Details endocrine and immune system pathways
• Visuals for absorption, transport, and digestion
• Helps with Paper 2 extended response prep
• Includes IA experiment suggestions and diagrams

Jessica Ytyped

Topic 7: Nucleic Acids

Notes on Topic 7: Nucleic Acids notes (13 pages). Underlined passages are wording taken directly from markschemes. *Disclaimer: notes are not updated to the latest syllabus, although there is a significant overlap in content

Jessica Ytyped

Topic 8: Metabolism, Cellular Respiration and Photosynthesis

Notes on Topic 8: Metabolism notes (15 pages). Underlined passages are wording taken directly from markschemes. *Disclaimer: notes are not updated to the latest syllabus, although there is a significant overlap in content

Jessica Ytyped