Ecology Test 1 Review: Question Preview (ID: 21290)


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Organisms need nitrogen, but they can't use it in the form found in the atmosphere.
a) True b) False c) d)
Photosynthesis is
a) A process where mitochondria in the cells use oxygen to break up sugar into an energy form that can be used by the cells. b) A series of reactions by which green plants and some other organisms use sunlight to make food from CO2 and water. c) d)
Cellular respiration is
a) A process where mitochondria in the cells use oxygen to break up sugar into an energy form that can be used by the cells. b) A series of reactions by which green plants and some other organisms use sunlight to make food from CO2 and water. c) d)
The foundation building block for all living things is
a) carbon b) oxygen c) hydrogen d) nitrogen
A source food web represents populations and their
a) predators b) prey c) history d) total energy
A sink food web represents populations and all of their
a) prey b) predators c) history d) total energy
A paleoecological web is
a) a web built from the fossil record b) a web based on energy fluxes c) a web based on predators d) a web based on prey
Food chains represent many food webs combined.
a) False b) True c) d)
Energy transfers upward but is ______________ with each transfer.
a) dimished b) increased c) constant d)
While energy decreases as it moves up the food chain, toxins also decrease in potency.
a) false b) true c) d)
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