Chapter 37 Biology 1210 Renee Dawson
What is the name of the process by which organisms convert the carbon in organic compounds into carbon in carbon dioxide?
Cellular respiration is the process by which organisms (heterotrophs, autotrophs, and decomposers) convert the carbon in organic molecules into carbon in carbon dioxide.
organisms that scavenge the waste products or dead bodies of other community members
What name is given to the process by which detritivores return carbon to the atmosphere?
Decomposition, the conversion of organic molecules into inorganic molecules, results in the release of carbon dioxide into the atmosphere.
Detritus is composed of _____.
Detritus is composed of dead organic matter and excreted wastes.
What do plants produce that supports the higher trophic levels of the community? energy-containing food molecules
Humans and sharks both eat fish. Which term applies to the relationship between the human and the shark?
Competition The human and the shark are both competing for a resource (fish).
Humans who have pets tend to be healthier than humans who do not have pets. What term applies to the relationship between a human and a pet?
In mutualism, both members of the species pair benefit; in this case the human is healthier and the pet is getting room and board.
Approximately _____% of the energy at one trophic level is passed on to the next highest trophic level.
Approximately 5–10% of the energy at one trophic level is passed on to the next highest trophic level. Lower.
Nitrifying bacteria convert ____ to ____
_____ removes nitrogen from the atmosphere.
Nitrogen fixation is the conversion of nitrogen gas to a form that can be used by plants (and other organisms).
What is assimilation
Assimilation is the uptake of nutrients into an organism.
D & E Both of these pointers are indicating nitrogen-fixing bacteria. Nitrogen fixation is the conversion of nitrogen to a form that plants can use.
B Nitrification is the conversion of organic nitrogen-containing compounds to nitrites and nitrates.
Denitrifying bacteria convert _____ to _____.
Denitrifying bacteria convert nitrates to nitrogen gas.
Nitrifying bacteria convert _____ to _____.
Nitrifying bacteria convert ammonium to nitrites.