IB Biology B2.2 Notes

This page contains our IB Biology notes for B2.2. By reading each one of these notes, you will fully cover the content for IB Biology 'Organelles & compartmentalisation'.

All Topic 2 Sub-topics

(HL)A2.1: Origins of cells

A2.2: Cell Structure

(HL)A2.2: Further cell structure

(HL)A2.3: Viruses

B2.1: Membranes And Transport

(HL)B2.1: Further membranes and transport

B2.2: Organelles & Compartmentalisation

(HL)B2.2: Further organelles

B2.3: Cell Specialisation

(HL)B2.3: Further cell specialisation

(HL)C2.1: Chemical signalling

C2.2: Neural Signalling

(HL)C2.2: Further neural signalling

D2.1: Cell Division

(HL)D2.1: Cell cycle

(HL)D2.2: Gene expression

D2.3: Water Potential

(HL)D2.3: Further water potential

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Organelles

You previously learned the basics of cellular structure, including the compartmentalization of eukaryotes into organelles. Organelles are defined as discrete subunits of cells adapted to perform specific functions. You are expected to understand the organelles include:

Nucleus
Endoplasmic reticulum
Golgi apparatus
Mitochondria
Chloroplasts
Vacuoles
Vesicles
Ribosomes
Plasma membrane

Note that the cell wall, cytoskeleton, and cytoplasm are not considered organelles as they are structural components that do not necessarily perform specific functions.

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