Concept Map — Chapter 2

Last updated at July 15, 2026 by

A quick map of how the big ideas of this chapter connect together.

The Invisible Living World cells and microorganisms The Cell 2.1 – 2.2, 2.5 Microorganisms 2.3 Connected to Microbes 2.4 Parts & types of cells membrane, cytoplasm, nucleus Four groups protozoa, algae, fungi, bacteria Helpful microbes cleaning, food, microalgae Curd, manure, oxygen yeast, Rhizobium, Spirulina
The Invisible Living World
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The Cell
the basic unit of life
Parts of a cell
membrane, cytoplasm, nucleus
Levels of organisation
cell to tissue to organ to body
Types of cells
plant, animal, fungal, bacterial
Microorganisms
too small to see
Four groups
protozoa, algae, fungi, bacteria
Connected to microbes
how microbes help us
Cleaning the environment
decomposition and manure
Microbes and food
yeast, curd, Rhizobium
Microalgae
make oxygen and food
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