Multiple choice

Which of the following pairs is/are not correctly matched?

  1. Gallionella - Iron bacteria
  2. Alcaligenes - Carboxydobacteria
  3. Rhodospirillum - Hydrogen bacteria
  4. Nitrobacter - Nitrifying bacteria

  1. 1 and 2

  2. 1 and 4

  3. 2 and 3

  4. 2 and 4

  5. 3 and 4
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Gallionella is an iron bacterium which oxidises Fe++ as a source of energy for lithoautotrophic growth. Nitrobacter is a nitryfying bacterium which oxidises NO2 to NO3.

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