Microorganisms

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Organism made of only one cell (unicellular) that is not an animal or a plant, bacteria or fungus. Many cause diseases in humans.

Tiny parasite that can only live if it is attached to another living thing. Smaller than bacteria.

The Largest group of microorganisms. They are found everywhere on earth and can be shaped like rods, spirals, or balls. Most are beneficial but some are harmful. Used to make cheese and Yoghurt Live in your gut and help

good for you

Another word for “microorganisms”

Bad for you

Living things that are too small to be seen without a microscope.

plant-like living things that are the major producers of oxygen. Found in rivers, lakes, and oceans.