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A colleague performs a smear prep from a colony on an agar plate. Without staining it, he looks at it under oil immersion with a light microscope (1000x magnification). “Hm," he says, "it's not purple, so it must be gram negative." Briefly explain the error in his logic, and say what he would have to do to show whether the organism is gram negative or gram positive. Your Answer:

A colleague performs a smear prep from a colony on an agar plate. Without staining it, he looks at it under oil immersion with a light microscope (1000x magnification). “Hm," he says, "it's not purple, so it must be gram negative." Briefly explain the error in his logic, and say what he would have to do to show whether the organism is gram negative or gram positive. Your Answer:

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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A colleague performs a smear prep from a colony on an agar plate. Without staining it, he looks at it under oil immersion with a light microscope (1000x magnification). “Hm," he says, "it's not purple, so it must be gram negative." Briefly explain the error in his logic, and say what he would have to do to show whether the organism is gram negative or gram positive. Your Answer:
Transcribed Image Text:A colleague performs a smear prep from a colony on an agar plate. Without staining it, he looks at it under oil immersion with a light microscope (1000x magnification). “Hm," he says, "it's not purple, so it must be gram negative." Briefly explain the error in his logic, and say what he would have to do to show whether the organism is gram negative or gram positive. Your Answer:
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