IBDP Biology HL/SL
IBDP Biology HL/SL is an immersive course designed to inspire curiosity, critical thinking, and a deep appreciation of life and living systems. Based on the IB Biology Subject Guide (first assessment 2025), the course encourages students to think like scientists — to question, investigate, analyze, and connect biological concepts to real-world issues.
At SEV7N, our IBDP Biology HL/SL program integrates the latest IB curriculum updates with conceptual clarity and practical understanding, empowering learners to develop the analytical and research skills essential for success in higher education and scientific careers.
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Overview of IBDP Biology HL/SL
The IBDP Biology HL/SL course explores the fundamental principles that explain how living organisms function, interact, and evolve. Students study core topics like genetics, cell biology, ecology, and physiology while developing essential experimental and analytical skills.
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Our expert IB educators guide students to understand not only what happens in biology but why it happens — linking theory with observation through inquiry-driven learning.
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The curriculum is aligned with the IB philosophy, fostering international-mindedness, interdisciplinary understanding, and ethical awareness of scientific applications.
IBDP Biology HL/SL Syllabus (2025 Update)
The new 2025 IBDP Biology syllabus is structured around four conceptual themes and one unifying Nature of Science framework:
- Unity and Diversity – Exploring the shared characteristics and variations among living organisms.
- Form and Function – Understanding how biological structures determine their functions.
- Interaction and Interdependence – Examining the relationships within and between systems in nature.
- Continuity and Change – Investigating inheritance, evolution, and adaptation over time.
The syllabus balances conceptual learning, skills, and content knowledge, encouraging inquiry-based exploration rather than rote memorization.
Core Topics (SL & HL)
- Molecular biology
- Genetics and inheritance
- Ecology and biodiversity
- Human physiology
- Cell biology
- Evolution and natural selection
- Energy and metabolism
Additional HL Topics
- Neurobiology and behavior
- Immunology
- Biotechnology and bioinformatics
- Advanced genetics and physiology
Course Structure and Learning Experience
The IBDP Biology HL/SL course promotes active learning through lab work, virtual simulations, collaborative projects, and research investigations.
Students develop essential Approaches to Learning (ATL) skills such as research, communication, and critical thinking — aligned with IB’s learner-centered pedagogy.
Duration and Format
- SL: 150 hours of guided learning
- HL: 240 hours of guided learning
- Assessment Preparation: Topic-wise summaries, past paper practice, and exam-style question training
Our experienced IB tutors personalize every session to suit student goals — ensuring both academic depth and exam excellence.
Assessment in IBDP Biology HL/SL
IB Biology assessments evaluate both understanding and application.
External Assessments
- Paper 1: Multiple-choice and data-based questions
- Paper 2: Structured and extended-response questions testing core concepts
- Paper 3 (HL only): Advanced topic questions and data analysis
Internal Assessment (IA)
A 10-hour individual investigation, where students design and conduct an experiment of their choice, demonstrating scientific inquiry and personal engagement.
SEV7N mentors guide students through every stage — from choosing a research question to writing a well-structured IA report aligned with IB criteria.
Why Choose SEV7N for IBDP Biology HL/SL
At SEV7N, we believe science education should ignite curiosity and empower students to think beyond textbooks.
What Makes SEV7N Unique:
- IB-certified and experienced Biology tutors
- Concept-based teaching aligned with IB pedagogy
- Personalized IA mentorship and EE (Extended Essay) guidance
- Regular progress tracking and feedback
- Real-world case studies and exam-focused strategies
Our goal is to make IBDP Biology HL/SL engaging, manageable, and deeply rewarding — helping students achieve academic excellence and scientific confidence.
Our Pedagogical Philosophy
The IBDP Biology HL/SL course at SEV7N follows the IB philosophy of education — nurturing inquiry, reflection, and lifelong learning.
We integrate the Nature of Science (NOS) framework and IB Learner Profile traits to develop open-minded, balanced, and principled global citizens.
Our inquiry-based approach ensures students not only learn biological facts but also understand how science evolves through questioning, collaboration, and evidence.
The assessment outline for SL
COMPONENT | OVERALL WEIGHTAGE (%) | APPROXIMATE WEIGHTAGE OF OBJECTIVES (%) 1 & 2 | APPROXIMATE WEIGHTAGE OF OBJECTIVES (%) 3 | DURATION |
Paper 1 | 20 | 10 | 10 | 45 minutes |
Paper 2 | 40 | 20 | 20 | 1 hour and 15 minutes |
Paper 3 | 20 | 10 | 10 | 1 hour |
IA | 20 | Focuses on objectives 1, 2, 3 & 4 | Focuses on objectives 1, 2, 3 & 4 | 10 hours |
External assessment (EA) for SL
COMPONENT | OVERALL WEIGHTAGE (%) | MARKS | DURATION | QUESTION PATTERN | SPECIFICATION |
Paper 1 | 20 | 30 | 45 minutes | 30 multiple- choice questions (MCQs) on core, out of which 15 are common with HL | Calculator is not permitted No marks are deducted for incorrect choices |
Paper 2 | 40 | 50 | 1 hour 15 minutes | Data based questions Short-answer (SA) and extended-response (ER) questions on core and AHL Two out of three ERs to be attempted | Use of calculator is permitted |
Paper 3 | 20 | 35 | 1 hour | Questions on core and SL option Sec A- all compulsory with two to three SA questions Sec B-SA and ER questions from one option | Use of calculator is permitted |
The assessment outline for HL
COMPONENT | OVERALL WEIGHTAGE (%) | APPROXIMATE WEIGHTAGE OF OBJECTIVES (%) 1 & 2 | APPROXIMATE WEIGHTAGE OF OBJECTIVES (%) 3 | DURATION |
Paper 1 | 20 | 10 | 10 | 1 hour |
Paper 2 | 36 | 18 | 20 | 2 hours and 15 minutes |
Paper 3 | 24 | 12 | 10 | 1 hour and 15 minutes |
IA | 20 | Focuses on objectives 1, 2, 3 & 4 | Focuses on objectives 1, 2, 3 & 4 | 10 hours |
External assessment (EA) for HL
COMPONENT | OVERALL WEIGHTAGE (%) | MARKS | DURATION | QUESTION PATTERN | SPECIFICATION |
Paper 1 | 20 | 40 | 1 hour | 40 multiple-choice questions (MCQs) on core and AHL, out of which 15 are common with SL | Calculator is not permitted No marks are deducted for incorrect choices |
Paper 2 | 36 | 72 | 2 hours and 15 minutes | Data based questions Short-answer (SA) and extended-response (ER) questions on core and AHL Two out of three ERs to be attempted | Use of calculator is permitted |
Paper 3 | 24 | 45 | 1 hour and 15 minutes | Questions on core and HL option Sec A- all compulsory with two to three SA questions Sec B-SA and ER questions from one option | Use of calculator is permitted |
Globally, Thousands of students use SEV7N resources to score perfect grades
