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.
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You can see colonies of microorganisms with the naked eye, but you would not be able to see a single microbe without a microscope
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Ants are insects
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Some microorganisms are so beneficial that life would not be possible without them. The bacteria living on the roots of plants allow the plants to get the nitrogen they need from the soil - and remember, all life on Earth is dependent on plants
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Fungi include single-celled microbes such as yeasts and molds (including penicillium, which provides us with penicillin) as well as multicellular organisms such as mushrooms, which are not microorganisms
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Not all bacteria are bad - our bodies use some kinds to help us digest food
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Scientists are not agreed on whether viruses are even alive. Remember MRS. NERG? Viruses don't demonstrate all seven life processes. Viruses aren't sensitive (they don't respond to their environment) and they don't reproduce on their own (they take over another species' cells, causing them to reproduce viruses)
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It's been said that Jenner's work has saved more lives than that of anyone else
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Antibiotics cannot kill viruses - this is why doctors do not prescribe them for colds (which are caused by viruses)
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Fungi also help with decomposition
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Bread and wine both use yeast which is a fungi. Yogurt uses bacteria
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