This Science quiz is called 'Microorganisms' and it has been written by teachers to help you if you are studying the subject at middle school. Playing educational quizzes is a fabulous way to learn if you are in the 6th, 7th or 8th grade - aged 11 to 14.
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Microorganisms are tiny life forms, so small that we need a microscope to see them. There are many types: bacteria, viruses and some kinds of fungi. Did you know that if you could weigh all the microorganisms on the Earth, they would weigh more than all other species combined? Microorganisms are found in every environment on the planet - even in the stomachs of cows and your own intestines!
What can we use to kill bacteria? Are viruses alive? How do fungi help us to make bread? Try this quiz to see what you know about these tiny living organisms.