Helpful in the making of bread.

A fungus used as a medicine.

Helping in the making of yogurt and cheese.

_____________ can be many different sizes ranging from microscopic single celled yeasts used in bread making to macroscopic fungi which contain many cells such as moulds, mushrooms, and toadstools.

_____________ are single-celled spherical, spiral or rod shaped organisms.

_______________ are parasites, which means they can only survive inside the cells of other living things.

________________ come in many different sizes from microscopic single celled diatoms used in toothpaste to macroscopic alga which contain many like seaweed.

____________ single celled organism which cause diseases such as malaria, and sleeping sickness. They are also helpful in the treatment of sewage waste where they eat the harmful bacteria making it safe for disposal.

Which observation supports the claim that microorganisms are helpful to ecosystems?

Some microorganism are harmful when they enter other living things and cause living things to ______________.

Organisms that live in the intestines of humans are helpful when they______________.

A living thing that is too small to be seen without a microscope.

An organism that gets energy by using dead organisms, nonliving materials, or waste as food.

A scientific tool used to see small objects more clearly.

If something is BENEFICIAL it is ___________

A single-cell fungus