Which of the following is the best reason to classify Streptococcus in the Lactobacillales?
A)Gram reaction
B)morphology
C)fermentation of lactose
D)rRNA sequences
E)found in dairy products

Question

Quizplus · Accepted Answer

Classification based on rRNA sequences is the most reliable and accurate method for identifying bacterial taxonomy. Streptococcus shares common rRNA sequences with other bacteria in the Lactobacillales order, which is why it is classified within this order. Morphology, Gram reaction, fermentation of lactose, and presence in dairy products may provide some clues but are not as definitive as rRNA sequencing.

Which of the Following Is the Best Reason to Classify