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science

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
        Help!  

Question
Answer
host   An organism that a parasite lives on or in to get a source of energy.  
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Parasite   An organism that benefits by living with, on, or in a host.  
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Vaccine   A substance used in a vaccination that consists of pathogens that have been weakened or dead.  
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Virus   A tiny, non-living particle that enters and then reproduces inside a living cell.  
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nanometer   a billionth of a meter  
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bacteriophage   A virus that infects bacteria  
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inner core   a part of a virus that contains genetic material and instructions  
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protein coat   the outer layer that protects the virus  
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