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Name: Period: Helpful Words: Oxygen, Cocci, Bacilli, Bacteria, Decomposers, Flagella, Strep throat, Reproduce, Capsule, Nitrogen, Meningitis, Protection, Pathogens Monerans are microscopic organisms more commonly known as ___________________________.They are simple cells without a nucleus, but some have ________________, whip like structures that helps them move. Other bacteria glide and some can crawl. There are more monerans than any other type of living organism in the world. In fact there are more of them, in and on, your body than there are people in the world. There are so many bacteria because they can divide and make more, as they very quickly ____________________. They live everywhere on earth, even where it is very cold, harsh and dry. They are able to survive because they have a protective coating or __________________. There are three main shapes of bacteria. Some are rod shaped, which are called_______________. Others are spheres called ______________ and others are cork screws, called spirilla. They can link together in chains and clusters. Some are aerobic which means they need ___________________, while others are anaerobic meaning, they don’t need it to carry on life processes. Monerans are very important to man’s well being. They help us digest our food, they help us make and preserve food, like cheese and yogurt. They recycle dead organisms so the atoms can be reused. The bacteria that feed on dead organisms and break them down are known as _________________________. Bacteria fix nitrogen into a form that can be used by other organisms to build body tissues. Sometimes bacteria are harmful to humans and can cause diseases or produce poisons that can even kill us. Some harmful bacteria can cause tuberculosis, pneumonia and even ________________________, a very sore throat usually accompanied by a fever. If these diseases are not treated with antibiotics, they can really damage our bodies. Some bacteria like salmonella, can cause food poisoning giving us diarrhea and stomach cramps. Some bacteria, like those that cause tetanus and botulism, produce poisons. Despite the harmful bacteria, man could not survive without the helpful bacteria, which make the world habitable.