IB Biology HL
Key Concepts
In the IB Biology HL (Higher Level) 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.
Protein Synthesis
9 mins
Codons, Degeneracy, and Sickle Cell
10 mins
The Electron Transport Chain and Chemiosmosis
8 mins
Carbohydrates and Lipids
12 mins
Structure and Function of Proteins
18 mins
Water
15 mins
Enzymes
11 mins
DNA Replication
9 mins
Level of Organisation 1
Molecules
Protein Synthesis
9 mins
Codons, Degeneracy, and Sickle Cell
10 mins
The Electron Transport Chain and Chemiosmosis
8 mins
Carbohydrates and Lipids
12 mins
Structure and Function of Proteins
18 mins
Water
15 mins
Enzymes
11 mins
DNA Replication
9 mins
Cell Structure and Function
11 mins
Neural Signaling - Impulse
10 mins
Neural Signaling - Synapse
7 mins
Cell Specialisation
15 mins
Mitosis, Cytokinesis & The Cell Cycle
18 mins
Cell Cycle - Mutagens & Cancer
9 mins
Level of Organisation 2
Cells
Cell Structure and Function
11 mins
Neural Signaling - Impulse
10 mins
Neural Signaling - Synapse
7 mins
Cell Specialisation
15 mins
Mitosis, Cytokinesis & The Cell Cycle
18 mins
Cell Cycle - Mutagens & Cancer
9 mins
The Cardiovascular System
22 mins
Muscle and Motility I
7 mins
Muscle and Motility II
10 mins
The Respiratory System
10 mins
Inheritance
16 mins
Homeostasis, Hormones and the Menstrual Cycle
10 mins
Level of Organisation 3
Organisms
The Cardiovascular System
22 mins
Muscle and Motility I
7 mins
Muscle and Motility II
10 mins
The Respiratory System
10 mins
Inheritance
16 mins
Homeostasis, Hormones and the Menstrual Cycle
10 mins
Energy in Ecosystems
8 mins
Carbon Cycle
11 mins
Evolution and Speciation
14 mins
Level of Organisation 4
Ecosystems
Energy in Ecosystems
8 mins
Carbon Cycle
11 mins
Evolution and Speciation
14 mins
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More IB Biology HL Resources
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.