Multiple choice

Which of the following are examples of Gram-negative bacteria?

  1. Bacillus subtilis
  2. Enterococcus faecalis
  3. Escherichia coli
  4. Xanthomonas campestris
  5. Zymomonas mobilis

  1. Only 1, 2 and 3

  2. Only 1, 3 and 5

  3. Only 2, 3 and 4

  4. Only 2, 3 and 5

  5. Only 3, 4 and 5
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

It is correct. Escherichia coli, Xanthomonas campestris and Zymomonas mobilis: All are Gram-negative bacteria.

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