Multiple choice

Which of the following is a set of acidophiles only?

  1. Escherichia, Euglena, Sulfolobus, Picrophilus

  2. Alicyclobacillus, Escherichia, Natronobacterium, Paramecium

  3. Alicyclobacillus, Ferroplasma, Picrophilus, Sulfolobus

  4. Escherichia, Ferroplasma, Natronobacterium, Picrophilus

  5. Escherichia, Euglena, Natronobacterium, Paramecium
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Alicyclobacillus, Ferroplasma, Picrophilus, and Sulfolobus: All are acidophiles (optimum growth between pH 0 and 5.5).

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