Multiple choice

Which of the following is a pair of hyperthermophilic bacteria?

  1. Anaerobaculum and Sulfobacillus

  2. Anaerobaculum and Pyrodictium

  3. Methanopyrus and Sulfobacillus

  4. Methanopyrus and Pyrodictium

  5. Pyrodictium and Sulfobacillus
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Methanopyrus is a rod-shaped hyperthermophilic methanogen, discovered on the wall of a black smoker from the Gulf of California at a depth of 2000 m, at temperatures of 84–110 °C. Pyrodictium is a genus of submarine hyperthermophilic archaea whose optimal growth temperature ranges is 80 to 105 °C.

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