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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. Read More

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: 18177   |  Last updated: Oct 4, 2024
  • Sample Question
    Which bacteria cell part goes in the box labelled a? 
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A quiz on types of bacteria! There are different types of bacteria around us and within us, but not all of them are bad as they play a specific function in the environment. Bacteria exist in millions and can’t be seen by...

Questions: 13  |  Attempts: 1540   |  Last updated: Mar 21, 2023
  • Sample Question
    Members of this Kingdom live almost everywhere and have peptidoglycan in their cell walls.
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Explore the intriguing world of microorganisms in the 'Biology Viruses and Bacteria' quiz. Understand the characteristics of viruses like the common cold, their omnipresence, and structural components such as the protein coat....

Questions: 13  |  Attempts: 8563   |  Last updated: Jan 8, 2025
  • Sample Question
    What are examples of Viruses?
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Explore the fundamentals of biological classification with the quiz on the Three-Domain System, developed by Carl Woese in 1990. Assess your knowledge on the domains Archaea, Bacteria, and Eukarya, their characteristics, and...

Questions: 20  |  Attempts: 1557   |  Last updated: May 20, 2025
  • Sample Question
    What are the three domains in the three-domain system?
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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: 3778   |  Last updated: Mar 21, 2023
  • Sample Question
    Which applies to Staphyloccocus spp.
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