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27 Cards in this Set
- Front
- Back
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make their own food from inorganic substances
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autotrophs
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the study of viruses
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Virology
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most common form of reproduction
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Binary fission
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bacteria which are capable of causing disease
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pathogens
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obtain organic matter from their environment for food
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heterotrophs
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gives virus its shape and protects the core of the virus from damage
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capsid
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rigid structure that surrounds the cells of plants, fungi, many protics, and most bacteria
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cell wall
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process in which a cell such as bacteria becomes infectedby a virus; destroys cell
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lytic cycle
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unicellular organism that lacks a nucleus and membrane-bound organelles
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prokaryote
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bacteria that needs oxygen to survive
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Obligate aerobes
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combination of the genetic materials of two bacteria cells
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conjugation
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an organism that feeds on dead organic materials
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Saprophyte (saprobe)
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protein strands used for attachment
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pili
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a bacteria that can metabolize with or without oxygen
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faculative bacteria
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bacteria that cannot live in the presence of oxygen
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obligate anaerobes
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an organism that obtains its nutrition at the expense of another
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parasite
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method by which temperate viruses infect a cell without destroying it
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lysogenic cycle
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structures used for movement
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flagella
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kingdom which is composed of bacteria which live in extreme habitats
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archabacteria
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viruses contain either __________in their
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DNA or RNA
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resistant structures produced by certain bacteria to survive extremes of temperatures, dehydration, chemicals, and radiation
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endospore
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organism that supports another organism
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host cell
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the process by which gaseous nitrogen in the air is converted into ammonia
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nitrogen fixation
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a virus that infects bacteria
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bacteriophage
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an enzyme that makes DNA from an RNA template
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Reverse transcriptase
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a chemical substance, usually biological in origin, that is harmful to the normal functioning of cells
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Toxin
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biological particle composed of genetic material and protein
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virus
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