Researchers have found a new type of bacteria, and they want to determine its phylum. What would be the most reliable method to do so?
A) conducting a Gram-stain test
B) performing an analysis of metabolic pathways
C) determining the ribosomal RNA sequence of the bacteria
D) analyzing the morphological characteristics of the bacteria

Question

Quizplus · Accepted Answer

Determining the ribosomal RNA sequence of the bacteria is the most reliable method to determine its phylum because ribosomal RNA is highly conserved across all organisms and can be used to identify evolutionary relationships between organisms. Other methods, such as the Gram-stain test, analysis of metabolic pathways, and analyzing morphological characteristics, can provide information about the bacteria, but may not be as reliable for identifying its phylum.

Researchers Have Found a New Type of Bacteria, and They