TRUE or FALSE only! 1. Pure cultures contain only a single species and no other organisms. 2. Pour plate method is done by pipetting liquified warm agar into a petri dish containing an inoculum. 3. Flaming the test tube’s mouth is necessary so that the moisture that accumulated will evaporate. 4. After Gram staining, the Gram positive bacteria will appear blue while the Gram negative bacteria will appear red.

TRUE or FALSE only! 1. Pure cultures contain only a single species and no other organisms. 2. Pour plate method is done by pipetting liquified warm agar into a petri dish containing an inoculum. 3. Flaming the test tube’s mouth is necessary so that the moisture that accumulated will evaporate. 4. After Gram staining, the Gram positive bacteria will appear blue while the Gram negative bacteria will appear red.

An Illustrated Guide To Vet Med Term

4th Edition

ISBN:9781305465763

Author:ROMICH

Publisher:ROMICH

Chapter11: The Great Communicator

Section: Chapter Questions

Problem 14MC

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TRUE or FALSE only!

1. Pure cultures contain only a single species and no other organisms.

2. Pour plate method is done by pipetting liquified warm agar into a petri dish containing an inoculum.

3. Flaming the test tube’s mouth is necessary so that the moisture that accumulated will evaporate.

4. After Gram staining, the Gram positive bacteria will appear blue while the Gram negative bacteria will appear red.

Definition Definition Technique that uses crystal violet or methylene blue as primary staining colors to distinguish gram-positive from gram-negative organisms. Under a microscope, the gram-positive organisms appear purple-brown, retaining the primary color. Gram-negative organisms appear pink or red as they do not acquire the color of the primary stain.

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