Campbell Biology- Chapter 27 Test Questions and Answers Rated A
peptidoglycan - -A protein-carbohydrate
compound that makes the cell walls of bacteria transduction - -the process of transfering
rigid genetic material from one cell to another by a
plasmid or bacteriophage
gram stain - -A staining method that
distinguishes between two different kinds of conjugation - -form of sexual reproduction
bacterial cell walls. in which paramecia and some prokaryotes
exchange genetic information
gram positive - -Describing the group of
bacteria that have a cell wall that is structurally Obligate aerobes - -organisms that require
less complex and contains more peptidoglycan a constant supply of oxygen in order to live
than the cell wall of gram-negative bacteria.
Gram-positive bacteria are usually less toxic than
gram-negative bacteria. Obligate anaerobes - -organisms that
cannot live where molecular oxygen is present
gram negative - -Describing the group of
bacteria that have a cell wall that is structurally anaerobic respiration - -Respiration that
more complex and contains less peptidoglycan does not require oxygen
than the cell wall of gram-positive bacteria.
Gram-negative bacteria are often more toxic than
gram-positive bacteria. nitrogen fixation - -the assimilation of
atmospheric nitrogen by soil bacteria and its
release for plant use on the death of the bacteria
flagellum - -a long, hairlike structure that
grows out of a cell and enables the cell to move
extremophiles - -organisms that survive in
extreme environments
plasmids - -The smalll, circular segments
of DNA that are found in bacteria and that stay
sparate from the bacterial chromosomes; used in extreme thermophiles - -Archaebacteria
genetic engineering. that live in extermely hot environments, such as
hydrothermal vents under the ocean
endospores - -A thick-walled protective
spore that forms inside a bacterial cell and extreme halophiles - -Archaebacteria that
resists harsh conditions live in very salty environments, such as the Dead
Sea
transformation - -modification of a cell or
bacterium by the uptake and incorporation of decomposers - -organisms that break down
exogenous DNA wastes and dead organisms and return raw
materials to the environment
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peptidoglycan - -A protein-carbohydrate
compound that makes the cell walls of bacteria transduction - -the process of transfering
rigid genetic material from one cell to another by a
plasmid or bacteriophage
gram stain - -A staining method that
distinguishes between two different kinds of conjugation - -form of sexual reproduction
bacterial cell walls. in which paramecia and some prokaryotes
exchange genetic information
gram positive - -Describing the group of
bacteria that have a cell wall that is structurally Obligate aerobes - -organisms that require
less complex and contains more peptidoglycan a constant supply of oxygen in order to live
than the cell wall of gram-negative bacteria.
Gram-positive bacteria are usually less toxic than
gram-negative bacteria. Obligate anaerobes - -organisms that
cannot live where molecular oxygen is present
gram negative - -Describing the group of
bacteria that have a cell wall that is structurally anaerobic respiration - -Respiration that
more complex and contains less peptidoglycan does not require oxygen
than the cell wall of gram-positive bacteria.
Gram-negative bacteria are often more toxic than
gram-positive bacteria. nitrogen fixation - -the assimilation of
atmospheric nitrogen by soil bacteria and its
release for plant use on the death of the bacteria
flagellum - -a long, hairlike structure that
grows out of a cell and enables the cell to move
extremophiles - -organisms that survive in
extreme environments
plasmids - -The smalll, circular segments
of DNA that are found in bacteria and that stay
sparate from the bacterial chromosomes; used in extreme thermophiles - -Archaebacteria
genetic engineering. that live in extermely hot environments, such as
hydrothermal vents under the ocean
endospores - -A thick-walled protective
spore that forms inside a bacterial cell and extreme halophiles - -Archaebacteria that
resists harsh conditions live in very salty environments, such as the Dead
Sea
transformation - -modification of a cell or
bacterium by the uptake and incorporation of decomposers - -organisms that break down
exogenous DNA wastes and dead organisms and return raw
materials to the environment
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