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IB Biology SL - Key Concepts

In the IB Biology SL (Standard 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.

You can now access audio versions of Key Concepts on the Revision Village Podcast

Level of Organisation 1

Molecules

Level of Organisation 1

Molecules

Enzymes

Enzymes video thumbnail

11 minutes

Protein Synthesis

Protein Synthesis video thumbnail

9 minutes

Codons, Degeneracy, and Sickle Cell

Codons, Degeneracy, and Sickle Cell video thumbnail

10 minutes

Carbohydrates and Lipids

Carbohydrates and Lipids video thumbnail

12 minutes

Structure and Function of Proteins

Structure and Function of Proteins video thumbnail

18 minutes

DNA Replication

DNA Replication video thumbnail

9 minutes

Water

Water video thumbnail

15 minutes


Level of Organisation 1

Molecules

Enzymes

Enzymes video thumbnail

11 minutes

Protein Synthesis

Protein Synthesis video thumbnail

9 minutes

Codons, Degeneracy, and Sickle Cell

Codons, Degeneracy, and Sickle Cell video thumbnail

10 minutes

Carbohydrates and Lipids

Carbohydrates and Lipids video thumbnail

12 minutes

Structure and Function of Proteins

Structure and Function of Proteins video thumbnail

18 minutes

DNA Replication

DNA Replication video thumbnail

9 minutes

Water

Water video thumbnail

15 minutes

Level of Organisation 2

Cells

Level of Organisation 2

Cells

Cell Structure and Function

Cell Structure and Function video thumbnail

11 minutes

Neural Signaling - Impulse

Neural Signaling - Impulse video thumbnail

10 minutes

Neural Signaling - Synapse

Neural Signaling - Synapse video thumbnail

7 minutes

Cell Specialisation

Cell Specialisation video thumbnail

15 minutes

Mitosis, Cytokinesis & The Cell Cycle

Mitosis, Cytokinesis & The Cell Cycle video thumbnail

18 minutes


Level of Organisation 2

Cells

Cell Structure and Function

Cell Structure and Function video thumbnail

11 minutes

Neural Signaling - Impulse

Neural Signaling - Impulse video thumbnail

10 minutes

Neural Signaling - Synapse

Neural Signaling - Synapse video thumbnail

7 minutes

Cell Specialisation

Cell Specialisation video thumbnail

15 minutes

Mitosis, Cytokinesis & The Cell Cycle

Mitosis, Cytokinesis & The Cell Cycle video thumbnail

18 minutes

Level of Organisation 3

Organisms

Level of Organisation 3

Organisms

The Cardiovascular System

The Cardiovascular System video thumbnail

22 minutes

The Respiratory System

The Respiratory System video thumbnail

10 minutes

Inheritance

Inheritance video thumbnail

16 minutes

Homeostasis, Hormones and the Menstrual Cycle

Homeostasis, Hormones and the Menstrual Cycle video thumbnail

10 minutes


Level of Organisation 3

Organisms

The Cardiovascular System

The Cardiovascular System video thumbnail

22 minutes

The Respiratory System

The Respiratory System video thumbnail

10 minutes

Inheritance

Inheritance video thumbnail

16 minutes

Homeostasis, Hormones and the Menstrual Cycle

Homeostasis, Hormones and the Menstrual Cycle video thumbnail

10 minutes

Level of Organisation 4

Ecosystems

Level of Organisation 4

Ecosystems

Energy in Ecosystems

Energy in Ecosystems video thumbnail

8 minutes

Carbon Cycle

Carbon Cycle video thumbnail

11 minutes

Evolution and Speciation

Evolution and Speciation video thumbnail

14 minutes


Level of Organisation 4

Ecosystems

Energy in Ecosystems

Energy in Ecosystems video thumbnail

8 minutes

Carbon Cycle

Carbon Cycle video thumbnail

11 minutes

Evolution and Speciation

Evolution and Speciation video thumbnail

14 minutes

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Frequently Asked Questions

The IB Biology SL Key Concepts section is one of the four main features on Revision Village for Biology SL students (in addition to Questionbank, Practice Exams and Past Papers). The Key Concepts section includes a carefully planned set of Biology SL 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.

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 SL 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.

This is not the aim of the Biology SL 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 SL 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 Standard Level examinations.

The Biology SL Key Concept videos on Revision Village are taught by experienced IB Biology teachers and examiners, who are passionate about teaching IB Biology SL 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.