Multiple choice

Which of the following bacteria are up to half millimetre long?

P. Dialister pneumosintes Q. Epulopiscium fishelsoni R. Thiomargarita namibiensis S. Escherichia coli

  1. P and Q

  2. P and R

  3. P and S

  4. Q and R

  5. Q and S
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Correct answer. Thiomargarita namibiensis and Epulopiscium fishelsoni are up to half a millimetre long and are visible to the unaided eye; Epulopiscium fishelsoni reaches 0.7 mm.

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