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LifeScienceCh21-22

Test Review

QuestionAnswer
Which heterotrophs eats other animals? omnivores and carnivores
All of life on earth exists in a region known as? the biosphere
Groups of different species that live together in a defined area make up a? community
The process in which organisms use chemical energy stored in the chemical bonds of inorganic molecules to make their own food in the absence of light is called? chemosynthesis
Heterotrophs are also called? consumers
Each step in a food chain or web is called a? trophic level
Autotrophs can be also called? producers
How much energy is transferred to organisms at the next trophic when they are eaten? 10%
During which process do plants use carbon dioxide? photosynthesis
In the nitrogen cycle, bacteria that live in soil and on plant roots in a symbiotic relationship with legumes change nitrogen gas into ammonia in a process called? nitrogen fixation
Which biogeochemical cycle does not involve a stage where the chemical enters the atmosphere? phosphorus cycle
What does not recycle in a biogeochemical cycle in the biosphere? energy
In the carbon cycle when does carbon not cycle through the biosphere? transpiration
How is carbon stored in the biosphere? - in the atmosphere as C02 - underground as fossil fuels and calcium carbonate rock
How is nitrogen returned to the atmosphere in the nitrogen cycle? denitrification by bacteria
How is the movement of matter through the biosphere different from the flow of energy? Matter is recycled within and between ecosystems thorough biogeochemical cycles.
What biomolecules found in living things contain phosphorus? nucleic acids, lipids, carbohydrates, ATP, proteins
What biomolecules found in living things contain phosphorus? nucleic acids, ATP
Created by: samanthadietzler
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