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.
Water
15 mins
Nucleic Acids
13 mins
Carbohydrates and Lipids
12 mins
Structure and Function of Proteins
18 mins
Enzymes
11 mins
Protein Synthesis
9 mins
Photosynthesis
14 mins
Photosynthesis HL
14 mins
Carbon Dioxide Enrichment Experiments
3 mins
The Electron Transport Chain and Chemiosmosis
8 mins
DNA Replication
9 mins
Codons, Degeneracy, and Sickle Cell
10 mins
Level of Organisation 1
Molecules
Water
15 mins
Nucleic Acids
13 mins
Carbohydrates and Lipids
12 mins
Structure and Function of Proteins
18 mins
Enzymes
11 mins
Protein Synthesis
9 mins
Photosynthesis
14 mins
Photosynthesis HL
14 mins
Carbon Dioxide Enrichment Experiments
3 mins
The Electron Transport Chain and Chemiosmosis
8 mins
DNA Replication
9 mins
Codons, Degeneracy, and Sickle Cell
10 mins
Cell Structure and Function
11 mins
Membrane Structure
10 mins
Membranes: Structure & Transport - HL
12 mins
Cell Specialisation
15 mins
Neural Signaling - Synapse
7 mins
Neural Signaling - Impulse
10 mins
Mitosis, Cytokinesis & The Cell Cycle
18 mins
Water Potential
11 mins
Cell Cycle - Mutagens & Cancer
9 mins
Level of Organisation 2
Cells
Cell Structure and Function
11 mins
Membrane Structure
10 mins
Membranes: Structure & Transport - HL
12 mins
Cell Specialisation
15 mins
Neural Signaling - Synapse
7 mins
Neural Signaling - Impulse
10 mins
Mitosis, Cytokinesis & The Cell Cycle
18 mins
Water Potential
11 mins
Cell Cycle - Mutagens & Cancer
9 mins
The Respiratory System
10 mins
The Cardiovascular System
22 mins
Plant Transport
17 mins
Muscle and Motility I
7 mins
Muscle and Motility II
10 mins
Homeostasis, Hormones and the Menstrual Cycle
10 mins
Pregnancy Testing by hCG Detection
2 mins
Reproduction in Flowering Plants
10 mins
Inheritance
16 mins
Level of Organisation 3
Organisms
The Respiratory System
10 mins
The Cardiovascular System
22 mins
Plant Transport
17 mins
Muscle and Motility I
7 mins
Muscle and Motility II
10 mins
Homeostasis, Hormones and the Menstrual Cycle
10 mins
Pregnancy Testing by hCG Detection
2 mins
Reproduction in Flowering Plants
10 mins
Inheritance
16 mins
Evolution and Speciation
14 mins
Energy in Ecosystems
8 mins
Carbon Cycle
11 mins
Natural Selection
13 mins
Level of Organisation 4
Ecosystems
Evolution and Speciation
14 mins
Energy in Ecosystems
8 mins
Carbon Cycle
11 mins
Natural Selection
13 mins
Thank you Revision Village Members
#1 IB Math Resource
Revision Village is ranked the #1 IB Math Resources by IB Students & Teachers.
34% Grade Increase
Revision Village students scored 34% greater than the IB Global Average in their exams (2021).
80% of IB Students
More and more IB students are using Revision Village to prepare for their IB Math Exams.
More IB Biology HL Resources
Frequently Asked Questions
What are the Biology HL Key Concepts?
The IB Biology Higher Leve Key Concepts section is one of the five main features available on Revision Village for Biology HL students, alongside the Questionbank, Data-based Questions, Practice Exams, and Past Papers. The Key Concepts section offers a carefully curated set of Biology HL exam revision videos designed to help students review specific concepts, such as “The Cardiovascular System”, that they may have missed or misunderstood in class. Each video is typically 10 to 15 minutes long, providing a concise and efficient way to reinforce key topics before applying knowledge through exam-style questions in the Questionbank, Data-based Questions, or Practice Exams sections of the Revision Village website.
How should I best use the Biology HL Key Concepts?
A great way to improve in IB Higher Level Biology is through consistent practice with exam-style questions. However, it’s easy to forget key concepts along the way. To reinforce understanding, students are encouraged to use the Biology HL Key Concept videos alongside their practice. Stuck on a specific question? Head to the Key Concepts section and watch a revision video that covers the relevant theory. Then, return to the original question and try solving it again with a fresh perspective.
Do the Biology HL Key Concept videos replace my textbook?
This is not the aim of the Biology Higher Level 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 goal of the Biology HL Key Concept section on Revision Village is to support students in their revision by offering a quick and effective way to review frequently tested topics in IB Biology Higher Level examinations.
Who are the teachers in the Biology HL Key Concept videos?
The Biology Higher Level 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.