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biology vocab 2

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Term
Definition
chitin   polymer made of modified sugars that is also found in the exoskeleton of insects  
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hypha   One of many long, slender filaments that makes up the body of a fungus  
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fruiting body   reproductive structure of a fungus that grows from the mycelium  
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mycelium   densely branched network of the hyphae of a fungus  
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lichen   symbiotic association between a fungus and a photosynthetic organism  
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mycorrhiza   symbiotic association of plant roots and fungi  
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virus   nonliving particle made of proteins, nucleic acids, and sometimes lipids that can replicate only by infecting living cells  
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capsid   protein coat surrounding a virus  
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bacteriophage   kind of virus that infects bacteria  
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lytic infection   type of infection in which a virus enters a cell, makes copies of itself, and causes the cell to burst  
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lysogenic infection   type of infection in which a virus embeds its DNA into the DNA of the host cell and is replicated along with the  
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prophage   bacteriophage DNA that is embedded in the bacterial hosts DNA  
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retrovirus   RNA virus that contains RNA as its genetic info  
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prokaryote   unicellular organism that lacks a nucleus  
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bacillus   rod shaped prokaryote  
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coccus   spherical prokaryote  
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spirillum   spiral or corkscrew shaped prokaryote  
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binary fission   type of asexual reproduction in which an organism replicates its DNA and divides in half, producing two identical daughter cells  
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endospore   structure produced by prokaryotes in unfavorable conditions; a thick internal wall that encloses DNA and a portion of the cytoplasm  
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conjugation   process in which paramecia and some prokaryotes exchange genetic info  
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pathogen   disease-causing agent  
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vaccine   preparation of weakened or killed pathogens used to produce immunity to a disease  
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antibiotic   group of drugs used to block the growth and reproduction of bacterial pathogens  
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emerging disease   disease that appears in the population for the first time, or a well known disease that suddenly becomes harder to control  
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prion   protein particles that cause disease  
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Created by: Sharion Davis
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