Which of the Following is NOT Characteristic of a Coliform

Question

Which of the following is NOT characteristic of a coliform?
A) facultatively aerobic
B) gram-negative
C) rod shaped
D) resistant to chlorination

Accepted Answer

Coliforms are not generally resistant to chlorination. Chlorine is a common disinfectant used in the treatment of water to remove coliform bacteria. Therefore, the correct answer is D, which states that coliforms are resistant to chlorination. Facultatively aerobic, gram-negative, and rod-shaped are all characteristics of coliform bacteria.