Multiple choice

Which of the following are examples of catalase-positive bacteria?

  1. Enterobacter
  2. Enterococcus
  3. Staphylococcus
  4. Streptococcus

  1. Only 1 and 2

  2. Only 1 and 3

  3. Only 2 and 3

  4. Only 2 and 4

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

Yes, it is correct. Catalase Test: The catalase test is done by placing a drop of hydrogen peroxide on a microscope slide. If the bacteria possess catalase, when a small amount of bacterial isolate is added to hydrogen peroxide, bubbles of oxygen are observed. If the mixture produces bubbles or froth, the organism is said to be 'catalase-positive' otherwise it is 'catalase-negative’. Enterobacter and Staphylococcus are examples of catalase-positive bacteria.

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