Question

a scientist discovers a new bacterial species. which activity would be the best way to determine the domain of the organism?
a. examine its dna
b. monitor its diet
c. observe its habitat
d. calculate its lifespan

Explanation:

To determine the domain of an organism, examining its DNA is crucial. DNA contains genetic information that can reveal characteristics specific to different domains (Bacteria, Archaea, Eukarya). Monitoring diet, observing habitat, or calculating lifespan do not directly provide the genetic - based evidence needed to classify an organism into its domain.

Answer:

A. examine its DNA