Biology 1407 Exam 2 Review Questions and Answers
Question 1.
cyanobacteria
Correct Answer: photosynthetic, blue-green bacteria
Question 2.
competitive coexistence
Correct Answer: ability to coexist despite sharing limiting resources
Question 3.
species diversity
Correct Answer: combines species richness and species evenness
Question 4.
gram negative bacteria
Correct Answer: retain red dye, has a thin peptidoglycan layer
Question 5.
chemoautotrophs
Correct Answer: get energy from oxidation
Question 6.
exotoxins
Correct Answer: soluble proteins released by living bacteria, highly toxic and
often fatal
Question 7.
herbivory
Correct Answer: predator is an animal and the prey is a plant
Question 8.
commensalism
Correct Answer: one benefits, the other is unaffected
Question 9.
hadobacteria
Correct Answer: thermophiles (bacteria that thrive in extreme heat)
Question 10.
thermus aquaticus
Correct Answer: found wherever hot water occurs, source of thermally stable
DNA polymerase
Question 11.
archaea lack
Page 1
, Correct Answer: peptidoglycan
Question 12.
hysteresis
Correct Answer: after being restored, a community may not revert to it's original
state
Question 13.
ectoparasites
Correct Answer: live outside the host body ex: leeches
Question 14.
proteobacteria
Correct Answer: largest group of bacteria, high diversity
Question 15.
result of high disturbance levels
Correct Answer: high mortality, only a couple survive
Question 16.
photoheterotrophs
Correct Answer: use light but get carbon from compunds made elsewhere
Question 17.
archaea live in
Correct Answer: extreme environments
Question 18.
actinobacteria
Correct Answer: gram positive, high ratios of GC/AT base pairs, form elaborately
branching filaments
Question 19.
food webs
Correct Answer: representations of trophic or energetic connections among
species
Question 20.
endotoxins
Correct Answer: released when a bacteria is lysed
Question 21.
community structure
Correct Answer: patterns of species diversity and composition at the community
or local scale
Page 2
Question 1.
cyanobacteria
Correct Answer: photosynthetic, blue-green bacteria
Question 2.
competitive coexistence
Correct Answer: ability to coexist despite sharing limiting resources
Question 3.
species diversity
Correct Answer: combines species richness and species evenness
Question 4.
gram negative bacteria
Correct Answer: retain red dye, has a thin peptidoglycan layer
Question 5.
chemoautotrophs
Correct Answer: get energy from oxidation
Question 6.
exotoxins
Correct Answer: soluble proteins released by living bacteria, highly toxic and
often fatal
Question 7.
herbivory
Correct Answer: predator is an animal and the prey is a plant
Question 8.
commensalism
Correct Answer: one benefits, the other is unaffected
Question 9.
hadobacteria
Correct Answer: thermophiles (bacteria that thrive in extreme heat)
Question 10.
thermus aquaticus
Correct Answer: found wherever hot water occurs, source of thermally stable
DNA polymerase
Question 11.
archaea lack
Page 1
, Correct Answer: peptidoglycan
Question 12.
hysteresis
Correct Answer: after being restored, a community may not revert to it's original
state
Question 13.
ectoparasites
Correct Answer: live outside the host body ex: leeches
Question 14.
proteobacteria
Correct Answer: largest group of bacteria, high diversity
Question 15.
result of high disturbance levels
Correct Answer: high mortality, only a couple survive
Question 16.
photoheterotrophs
Correct Answer: use light but get carbon from compunds made elsewhere
Question 17.
archaea live in
Correct Answer: extreme environments
Question 18.
actinobacteria
Correct Answer: gram positive, high ratios of GC/AT base pairs, form elaborately
branching filaments
Question 19.
food webs
Correct Answer: representations of trophic or energetic connections among
species
Question 20.
endotoxins
Correct Answer: released when a bacteria is lysed
Question 21.
community structure
Correct Answer: patterns of species diversity and composition at the community
or local scale
Page 2
