The optimum pH for growth of most species of bacteria is ________.
A) pH 5
B) pH 7
C) pH 9
D) pH 6
E) pH 1

Question

Quizplus · Accepted Answer

Most species of bacteria grow optimally at a neutral pH of 7. However, some species such as acidophilic bacteria grow best at a pH of 5 or below, while others such as alkaliphilic bacteria prefer a pH of 9 or above. The pH range for bacterial growth varies depending on the species and can range from pH 1 to pH 10.

The Optimum PH for Growth of Most Species of Bacteria