Which of the following is NOT a trait of rickettsias?
A. They are obligate intracellular parasites.
B. They lack cell walls.
C. They have not been cultivated in the absence of host cells.
D. Both the host and parasite are required in order to be alive and metabolically active.
Answer:B
Which of the following is NOT a trait of rickettsias?
A. They are obligate intracellular parasites. B. They lack cell walls. C. They have not been cultivated in the absence of host cells. D. Both the host and parasite are required in order to be alive and metabolically active.