Transport System in Organisms (3)

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Need for transport systems in organisms (1)

Every cell needs oxygen for cell respiration and nutrients to obtain energy

Need for transport systems in organisms (2)

At the same time, carbon dioxide and other waste products produced by cells need to be eliminated to the external environment

Need for transport systems in organisms (3)

The process of carrying oxygen, nutrients and other useful substances from the external environment into the cells is through diffusion

Need for transport systems in organisms (4)

The process of eliminating waste products from the cells is also through diffusion

Organisma that do not have a specialised transport system

Simple organisms

Examples of unicellular organisms (1)

Amoeba sp.

Examples of unicellular organisms (2)

Euglena sp.

Examples of unicellular organisms

Paramecium sp.

Transport system in simple organisms (1)

Simple organisms such as unicellular organisms do not have a specialised transport system

Transport system in simple organisms (2)

Substances needed by cells such as oxygen and nutrients enter directly into cells via diffusion through the cell membrane

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