A Commensal Bacterium

Question

A commensal bacterium
A)does not receive any benefit from its host.
B)is beneficial to its host.
C)may also be an opportunistic pathogen.
D)isn't capable of causing disease in its host.
E)always causes disease in its host.

Accepted Answer

Commensal bacteria may also act as opportunistic pathogens under certain conditions, such as when the host's immune system is compromised. They typically live in a symbiotic relationship where they benefit without harming the host, but can cause disease if the balance is disturbed.