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

Question

Quizplus · Accepted Answer

Most species of bacteria grow optimally at a neutral pH of about 7. However, some bacteria are adapted to acidic (pH < 7) or alkaline (pH > 7) environments and can survive and grow outside the neutral range. Therefore, pH 5 or pH 9 may be suitable for the growth of some bacteria, but not for most bacterial species. pH 6 may be suitable for some bacterial species, but it is not the optimum pH for growth of most bacteria.

The Optimum PH for Growth of Most Species of Bacteria