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27 Cards in this Set

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