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Flagellum

Key Stage 3

Meaning

A flagellum is a tail like part of some micro-organisms including a Euglena.

Singular Noun: Flagellum
Plural Noun: Flagella

Function

A flagellum allows a cell to move towards food and away from danger.

About Flagella

Cells can have more than one flagella.
The flagellum is sensitive to certain chemicals and to temperature and will begin moving when certain chemicals and temperatures are detected.

Examples

Flagellum.png
Flagella.png
The flagellum is labelled in this diagram of a Euglena. Two flagella are labelled in this diagram of a bacterium.

Key Stage 4

Meaning

A flagellum is a tail like organelle found on bacteria and some protists used to help it move.

Function

A flagellum allows a cell to move towards food and away from harsh environmental conditions.

About Flagella

Cells can have more than one flagella.
Flagella are found on some bacteria such as E.coli and on some protists such as euglena.
The flagellum is sensitive to certain chemicals and to temperature and will begin moving when certain chemicals and temperatures are detected.

Examples

Flagellum.png
Flagella.png
The flagellum is labelled in this diagram of a Euglena. Two flagella are labelled in this diagram of an E.coli bacterium.

References

Edexcel

Flagella, page 24, GCSE Biology, CGP, Edexcel
Flagellum, page 10, GCSE Biology, Pearson, Edexcel
Flagellum, page 10, GCSE Combined Science, Pearson Edexcel

OCR

Flagella, page 21, Gateway GCSE Biology, Oxford, OCR