Ch 7 bacteria and viruses
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| bacteria | microscopic prokaryotes
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| anaerobic | bacteria that do NOT need oxygen to survive
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| aerobic | bacteria that need oxygen to survive
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| flagella | long whip-like structure found on many bacteria
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| fission | cell division that forms two genetically identical cells
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| conjugation | two bacteria of the same species attach to each other and combine their genetic material
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| endospore | forms when a bacterium builds a thick internal wall around its chromosome and part of the cytoplasm
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| decomposition | the breaking down of dead organisms and organic waste
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| nitrogen fixation | the conversion of atmospheric nitrogen into nitrogen compounds that are usable by living things
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| bioremediation | the use of organisms, such as bacteria, to clean up the environmental pollution
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| pathogen | an agent that causes disease
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| antibiotics | medicines that stop the growth and reproduction of bacteria
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| pasteurization | the process of heating food to a temperature that kills most harmful bacteria
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| virus | a strand of DNA or RNA surrounded by a layer of protein that can infect and replicate in a host cell
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| antibody | a protein that can attach to a pathogen and make it useless
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| vaccine | a mixture containing material rom one or more deactivated pathogens, such as viruses
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