Multiple choice

Which is a beneficial microorganism?

  1. staph bacteria that causes boils

  2. mold that produces penicillin

  3. algae that causes red tide

  4. fungus that causes ringworms
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Penicillium mold is a beneficial microorganism because it produces penicillin, a vital antibiotic used to treat bacterial infections. The other options describe harmful microorganisms that cause diseases or environmental damage.

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