Chlamydia is a sexually transmitted disease that is caused by a bacterium called Chlamydia trachomatis.

Question

Which of these are characteristics of the infectious agent that causes chlamydia?

a
Non-living particle that contains DNA
b
Unicellular organism that contains DNA
c
Unicellular organism that replicates only inside of other organisms
d
Nonliving particle that replicates only inside of other organisms

Answer 1

The characteristics of the infectious agent that causes chlamydia (Chlamydia trachomatis) are best described by:

c. Unicellular organism that replicates only inside of other organisms.

Chlamydia trachomatis is a bacterium, which is considered a unicellular organism, and it is an obligate intracellular parasite, meaning it can only replicate within the cells of a host organism.