Question

A technician who is adding dye to a tissue specimen is most likely trying to determine whether the bacteria are what?

(A) gram positive or gram negative

(B) round or rod shaped

(C) aerobic or anaerobic

(D) harmful or harmless

Answer 1

(A) gram positive or gram negative

Reason: to perform a gram stain it requires the use of both crystal violet and safranin. If the color appears pink, the specimen is gram negative, but if the specimen results in a purple color, it is considered to be gram positive.