Actinobacteria
A) are photoheterotrophs.
B) are the source of many important antibiotics.
C) are Gram-negative bacteria.
D) were once classified as protists.
E) are the only bacteria that divide by mitosis.

Question

Quizplus · Accepted Answer

Actinobacteria are known as high G+C Gram-positive bacteria, and they are a source of many important antibiotics such as streptomycin, erythromycin, and tetracycline. They are not photoheterotrophs, Gram-negative, or protists. They do not divide by mitosis, but instead use a form of cell division called binary fission.