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25 Cards in this Set
- Front
- Back
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Energy is defined |
ability to change cause |
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an example of biological work |
leaf growth in spring |
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thermal energy exist as |
motion of atoms or molecules |
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chemical energy exist as |
electrons in bonds between atoms |
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autotrophs do |
make there own glucose use respiration to release energy from glucose release oxygen during phoyosynthesis |
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organisms that get their organic energy from t ogeather things living to dead are called |
heterotrophs |
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animals that eat meet and weed |
omnivores |
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organisms that break down and absorb dead nutrients |
decomposers |
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the network of animals eating one or more types of food is called a |
food web |
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the following organisms ectotherns |
worms |
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the prefix kilo means |
1000 |
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units showing mass per area are |
kg/m2 |
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a forest produced 3.0 x 10 3 kg/y. Converted to g/y the production is: |
3.0 x 10 6 g/y |
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Light energy is used for photosynthesis in this correctly balanced chemical equation |
6CO2 + 6H2O-> C6H12O6 +6O2 |
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The correct equation for cellular respiration which provides energy for biological work is: |
C6H12O6 + 6O2 -> 6CO2 + 6H2O |
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If grasses and shrubs were removed from a MA ecosystem |
production of food energy would decrease |
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The network of animals eating one or more types of food is called |
A food web |
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Detritivores (eat detritus) |
worms |
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In food webs, after organisms respire and perform biological work the energy ends up as |
heat |
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In a pyramid of energy each trophic level is smaller than the one below because |
organisms burn the majority of their food energy for biological work |
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Carbon dioxide goes from an ecosystem to the air in the following ways |
decomposer(soil) respiration Plant respiration animal respiration |
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In the C cycle, if a person exhales a molecule of carbon dioxide into the air, which of the following is most likely to happen next to the atom of carbon in this molecule? |
It may be used as part of a sugar in a plant. |
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In the carbon cycle, ______________ is the flux that movescarbon from plants and animals and into the soils |
death |
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endotherms have lower conversion efficiencies than ectotherms because they |
maintain higher body temperatures |
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if the buckthorn invasion continues and all the large native trees are replaced by smaller buckthorn bushes, the amount of carbon removed from the atmosphere by products every year will |
decrease |
