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Bacteria Quizzes, Questions & Answers

Quick – take your best guess of how many bacteria are living in your gut right now. Did you say a thousand? A million? Or more? If you guessed a hundred trillion or so, you’re right on! If you never realized how much space you’re sharing with these creepy creatures, you should take our bacteria quiz and learn more.

Bacteria can cause thousands of diseases from gingivitis to gangrene; they live in environments anywhere from the bottom of the ocean to Antarctic ice sheets; and some of them even help keep you healthy instead of making you sick! Before you reach for the antibacterial hand sanitizer, find out more about the mysterious microscopic world right under your nose – and inside of it!

Top Trending Quizzes


Bacteria are single-celled, microscopic organisms found everywhere. Do you know about the anatomy of bacteria cell? Take this informative quiz on bacteria cell structure to learn more about it. Do you know there is a virus that...

Questions: 10  |  Attempts: 16105   |  Last updated: Mar 8, 2024
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    Which bacteria cell part goes in the box labelled a? 
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In bacteriology, gram-positive bacteria are bacteria that give a positive result in the Gram stain test, which is traditionally used to quickly classify bacteria into two broad categories according to their type of cell...

Questions: 25  |  Attempts: 2993   |  Last updated: Mar 21, 2023
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    Which applies to Staphyloccocus spp.
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Quiz for monday

Questions: 13  |  Attempts: 7912   |  Last updated: Jan 18, 2023
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    What are examples of Viruses?
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Studying bacterias?  Do you know about Enterobacteriaceae? It is a large group of Gram-negative bacteria. It was first proposed to the world of science by Rahn in 1936, and now includes over 30 genera and 100 species. If you...

Questions: 42  |  Attempts: 2293   |  Last updated: Mar 21, 2023
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    Member/s of the Escherichieae tribe
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This quiz will test your knowledge of Bacteria structure and function. Let's start this quiz now!

Questions: 17  |  Attempts: 15463   |  Last updated: Mar 22, 2023
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    Bacteria can be which of the following shapes?
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Popular Quizzes


There are 15 questions in Part 1.  Some of the questions have added information to help us memorize additional details of certain bacteria.  If you find an error, please let me know.  REMEMBER, all of these...

Questions: 15  |  Attempts: 5133   |  Last updated: Jan 18, 2023
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    The proper treatment for Legionella Pneumophila is:
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Gram-positive bacteria are bacteria that give a positive result in the Gram stain test, which is traditionally used to quickly classify bacteria into two broad categories according to their cell wall. Test out what you know...

Questions: 11  |  Attempts: 3726   |  Last updated: Aug 21, 2023
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     Poly-D-glutamicacid protein capsule that prevents phagocytosis.
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