Multiple choice

Which of the following includes the smallest and the simplest organisms?

  1. Protozoa

  2. Amoeba

  3. Mycoplasma

  4. Yeast

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Mycoplasma are the smallest known free-living organisms (0.1-0.3 micrometers) and lack a cell wall, making them simpler than other options. Protozoa and amoeba are larger protists, while yeast is a fungus. Mycoplasma's minimal size and bacterial simplicity make it the correct answer.

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