Question

Commensal species:

a. Typically do not cause harm to the host.
b. Likely become killed off from a round of antibiotics.
c. Can be present in many different parts of the body.
d. A & C
e. A, B & C

Answer 1

Commensal species do not harm the host and can live in multiple areas of the body but are likely to be affected by antibiotics, making the correct answer e. A, B & C.

Step-by-step explanation:

Commensal Species in Biology

Commensal species, by definition, typically do not cause harm to the host and can be present in many different parts of the body. In the context of commensal bacteria on the human body, such as Staphylococcus epidermidis living on the skin, they benefit from the relationship while the host remains unaffected. However, when considering the impact of antibiotics, these commensal bacteria are likely to become killed off because antibiotics do not selectively target harmful bacteria; they can also destroy beneficial commensal bacteria.

Therefore, when analyzing the options provided in the question, the correct answer would be that commensal species typically do not harm the host, can inhabit various parts of the body, and are susceptible to antibiotics, making the correct choice e. A, B & C.