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Microorganisms worksheets

Bacteria, viruses, fungi and hygiene.

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How to make microorganisms worksheets

  1. 1

    Choose which kinds of questions to include and how many of each.

  2. 2

    Tap “New worksheet” for a fresh mix of questions.

  3. 3

    Edit the title and choose A4 or US Letter.

  4. 4

    Download the PDF with its answer key and print it.

About these microorganisms worksheets

Microorganisms are everywhere: some make us ill, but many are helpful, turning milk into curd, making bread rise and breaking down waste. These worksheets cover bacteria, viruses and fungi, how diseases spread, vaccines and antibiotics, and simple hygiene habits.

What the worksheet covers

The question bank for this topic has 12 key terms, 10 true-or-false statements, 8 multiple-choice questions, 8 fill-in-the-blank sentences and 4 short-answer questions. Each worksheet mixes a selection, so no two are the same.

  • Question types: match words to meanings, fill in the blanks, true or false, multiple choice, short answers, word search.
  • Key words: microorganism, bacteria, virus, fungi, yeast, mould, germ, vaccine, antibiotic, fermentation, decay, hygiene.
  • Best for: grades 3–8 (ages 8–14).

More worksheets

Find more topics in science worksheets. Every worksheet is made on your device, and nothing is uploaded.

Frequently asked questions

Do antibiotics work against viruses?

No. Antibiotics only kill bacteria. Colds and flu are caused by viruses, so antibiotics don’t help them.

What age is this worksheet for?

Grades 3–8 (ages 8–14). The questions use plain language and avoid trick wording.

Is there an answer key?

Yes. Every worksheet ends with an answer key on its own page. Switch it off if you’re giving the sheet as a test.

Can I choose the kinds of questions?

Yes. Switch each section on or off (matching, fill in the blanks, true or false, multiple choice and more) and choose how many questions go in each.

Can I print it in black and white?

Yes. The worksheet uses light tints that print clearly in grey, or pick the grey colour theme.

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