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

Answer 1

The correct characteristics of the infectious agent that causes chlamydia, Chlamydia trachomatis, are:

a: Unicellular organism that contains DNA
d: Unicellular organism that replicates only inside of other organisms

Chlamydia trachomatis is a bacterium (unicellular organism) that has its own DNA and requires a host cell to replicate, as it is an obligate intracellular pathogen. Options b and c refer to viruses or non-living particles, which do not apply to Chlamydia trachomatis.