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Bacteria Quizzes & Trivia

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!
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Let's test your knowledge of bacteria cell structures!

Questions: 7  |  Attempts: 6540   |  Last updated: Dec 12, 2019
  • Sample Question
    Which bacteria cell part goes in the box labelled a? 

What do you know about bacterial transformation? Do you assume you can pass this quiz? Bacterial transformation is a horizontal gene transfer process by which some bacteria take up foreign genetic material (naked DNA) from the...

Questions: 10  |  Attempts: 2058   |  Last updated: Sep 3, 2020
  • Sample Question
    DNA transformation involves the transfer of naked DNA into a recipient cell.

How well you know probiotic bacteria? Bacteria can either be harmful of beneficial to animals and plants. The human body has millions of bacteria that can be found within it, which helps in carrying out most of the functions...

Questions: 12  |  Attempts: 1058   |  Last updated: Sep 25, 2020
  • Sample Question
    There are more gut bacteria than the total number of cells in the body.

This quiz will test your knowledge of Bacteria structure and function. Let's start this quiz now!

Questions: 17  |  Attempts: 12271   |  Last updated: May 4, 2017
  • Sample Question
    Bacteria can be which of the following shapes?

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: 3715   |  Last updated: Dec 20, 2012
  • Sample Question
    The proper treatment for Legionella Pneumophila is:
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Enterobacteriaceae is a large family of Gram-negative bacteria. It was first proposed by Rahn in 1936, and now includes over 30 genera and more than 100 species. Some examples of the bacteria are -  Klebsiella,...

Question:   |  Attempts: 11   |  Last updated: Apr 29, 2021

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...

Question:   |  Attempts: 7   |  Last updated: Apr 29, 2021



Question:   |  Attempts: 136   |  Last updated: Feb 2, 2021



Question:   |  Attempts: 66   |  Last updated: Dec 18, 2020

Do you know about gram-negative bacteria? Do you think you can positively pass this quiz? Gram-negative bacteria do not preserve the crystal violet stain used in the Gram staining method of bacterial variation. The...

Question:   |  Attempts: 507   |  Last updated: Oct 5, 2020

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Question:   |  Attempts: 1896   |  Last updated: Sep 2, 2020

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...

Question:   |  Attempts: 937   |  Last updated: Sep 2, 2020



Question:   |  Attempts: 352   |  Last updated: Jul 11, 2020

What do you know about bacterial conjugation? Bacteria are very interesting to study, and in this special quiz, we get to understand the process through which genetic material moves through bacteria cells.do give it a shot and be...

Question:   |  Attempts: 83   |  Last updated: Jul 8, 2020

Test Your Knowledge about Pathogenic Bacteria by taking this trivia quiz. Bacteria exist in two forms and these are the beneficial kind and the pathogenic one which causes diseases to mammals. In this quiz, we focus on the second...

Question:   |  Attempts: 36   |  Last updated: Nov 28, 2019

What Do You Know About Mycobacterium? These pathogens are to blame when it comes to some of the serious diseases that affect mammals. Do you know enough about these classes of bacteria to pass this special quiz? The best way to...

Question:   |  Attempts: 125   |  Last updated: Nov 28, 2019

Trivia Facts Quiz On Types Of Bacteria And Their Functions. Most people are of the view that all bacteria are harmful, but the fact is that different bacteria play a vital role in sustaining the life of living things. In this...

Question:   |  Attempts: 98   |  Last updated: Oct 17, 2019

There are different types of bacteria on earth, and each has a role to play when it comes to supporting life as we know it. Some causes harm to plants and animals but are still a necessity. What do you know about bacterial...

Question:   |  Attempts: 47   |  Last updated: Aug 7, 2019

This is your description.

Question:   |  Attempts: 52   |  Last updated: Dec 7, 2018

Bacteria and viruses are the most common cause of food poisoning. The bacteria that cause most deaths most illnesses, hospitalizations, and deaths in the United States are Salmonella and Norovirus. Test out what you know...

Question:   |  Attempts: 786   |  Last updated: Oct 16, 2018

Gram Straining is a method of staining used to distinguish and classify bacterial species into two large groups, which are negative or positive. Do you believe you can classify bacteria into their correct groups? If you said...

Question:   |  Attempts: 290   |  Last updated: Oct 16, 2018

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...

Question:   |  Attempts: 1744   |  Last updated: Oct 16, 2018

 Exam 2 for final exam study.

Question:   |  Attempts: 95   |  Last updated: Jul 2, 2018

First part of chapter 10

Question:   |  Attempts: 51   |  Last updated: Feb 13, 2017