IB Biology HL - 2024 - Key Concepts
In the IB Biology HL (Higher Level) 2024 Key Concepts section, you will find summary videos that will help you review the most important concepts and skills necessary for success. They are ideal for a quick refresher before tackling questions in the Revision Village Questionbank or Practice Exams sections of the website.
Topic 1
Cell Biology
Cell Cycle - Mutagens & Cancer
9 minutes
Cell Specialisation
15 minutes
Cell Structure and Function
11 minutes
Mitosis, Cytokinesis & The Cell Cycle
18 minutes
Topic 2
Molecular Biology
Protein Synthesis
9 minutes
Water
15 minutes
Carbohydrates and Lipids
12 minutes
Structure and Function of Proteins
18 minutes
DNA Replication
9 minutes
Enzymes
11 minutes
Topic 3
Genetics
Codons, Degeneracy, and Sickle Cell
10 minutes
Inheritance
16 minutes
Topic 4
Ecology
Energy in Ecosystems
8 minutes
Carbon Cycle
11 minutes
Topic 5
Evolution & Biodiversity
Evolution and Speciation
14 minutes
Topic 6
Human Physiology
The Nervous System 1
10 minutes
The Cardiovascular System
22 minutes
The Nervous System 2
7 minutes
The Respiratory System
10 minutes
Homeostasis, Hormones and the Menstrual Cycle
12 minutes
Topic 8
Metabolism, Cell Respiration & Photosynthesis
The Electron Transport Chain and Chemiosmosis
8 minutes
Topic 11
Animal Physiology
The Musculoskeletal System I
7 minutes
The Musculoskeletal System II
10 minutes
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Frequently Asked Questions
What are the Biology HL Key Concepts?
The IB Biology HL Key Concepts section is one of the four main features on Revision Village for Biology HL students (in addition to Questionbank, Practice Exams and Past Papers). The Key Concepts section includes a carefully planned set of Biology HL Exam Revision Videos that students can use to refresh specific concepts (e.g. Carbon Cycle) that they may have missed or misunderstood in class. The revision videos typically range between 5 and 10 minutes in length and are a short and concise way for students to quickly refresh a concept, before practicing exam questions, either in the Questionbank or Practice Exams section of the Revision Village website.
How should I best use the Biology HL Key Concepts?
A great way to improve in Biology is by practicing lots of questions, but sometimes we forget key pieces of theory. It’s recommended that students use the Biology HL Key Concepts in conjunction with solving exam questions. Stuck on a specific question? Go to the Key Concepts section and watch one of the revision videos that recaps the theory. It’s recommended that students then return to the original question and try and solve it again.
Do the Biology HL Key Concept videos replace my textbook?
This is not the aim of the Biology HL Key Concept section on Revision Village. These videos are short and concise and aim to ‘recap’ the theory, as opposed to teaching and explaining the theory, which is the purpose of textbooks. The Biology HL Key Concept section on Revision Village aims to support students’ revision process by providing an easy way to quickly recap the concepts that occur frequently on IB Biology Higher Level examinations.
Who are the teachers in the Biology HL Key Concept videos?
The Biology HL Key Concept videos on Revision Village are taught by experienced IB Biology teachers and examiners, who are passionate about teaching IB Biology HL concepts in a simple, intuitive and engaging manner. The team is dedicated to helping each and every student achieve their best possible IB Biology grade.