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Microbiology Milestones Quiz

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Questions and Answers

What significant contribution to microbiology was made by Angelina Fannie and Walther Hesse in 1882?

Development of a quantitative approach for analyzing water samples
First report of the petri plate
Introduction of agar as a support medium for solid culture (correct)
Creation of a dye system for identifying bacteria

Which innovation is attributed to Hans Christian Gram in 1884?

Creation of the Gram stain technique (correct)
Development of the petri plate
Establishment of the most probable number test
First use of agar as a culture medium

What did Julius R. Petri contribute to microbiological techniques in 1887?

The development of a dye system for bacteria identification
Creation of agar as a solid culture medium
First report of the petri plate (correct)
The quantitative analysis of water using the multiple-tube fermentation test

In 1915, what method did M. H. McGrady introduce for analyzing water samples?

<p>Most probable number, multiple-tube fermentation test (A)</p> Signup and view all the answers

Which of the following developments occurred earliest in the timeline of microbiological advancements?

<p>Introduction of agar by Fannie and Hesse (C)</p> Signup and view all the answers

Flashcards

Gram Staining

A technique for identifying bacteria based on their cell wall structure. Bacteria are stained with a purple dye, then treated with a decolorizing agent.

Agar

A nutrient-rich jelly-like substance derived from seaweed. It is used as a solid foundation for growing bacteria in petri dishes.

Petri dish

A flat, shallow, round dish with a lid, typically used in microbiology for culturing bacteria.

Most Probable Number (MPN) Method

A method for determining the probable number of bacteria in a sample by analyzing the number of tubes that show growth after inoculation.

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Solid Culture

A system for culturing bacteria on a solid medium that allows the growth of isolated colonies, each originating from a single bacterium.

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Study Notes

Microbiology Milestones

In 1882, Angelina Fannie and Walther Hesse, working in Koch's lab, pioneered using agar as a solid culture medium.
In 1884, Hans Christian Gram developed the Gram stain, a crucial dye system for bacterial identification.
Julius Petri introduced the petri dish in 1887.
In 1915, M.H. McGrady developed a quantitative method for water analysis, using the most probable number (MPN) and multiple-tube fermentation tests.

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Description

Test your knowledge on key milestones in microbiology from the late 19th to early 20th century. Discover the contributions of pioneers like Angelina Fannie, Hans Christian Gram, and Julius Petri. This quiz examines foundational techniques and methods that shaped the field of microbiology.