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Biology Review #4

TermDefinition
Producers / Autotrophs Plants... the bottom of the pyramid.
Consumers / Heterotrophs Herbivores and carnivores... Middle and top of the pyramid.
Decomposers Fungi & bacteria [recycle nutrients].
Energy in a Food Web All originally comes from the sun and decreases with every link / level.
Recycled NOT Recycled Carbon, nitrogen, and water are recycled through the environment. Energy cannot be recycled.
Ecological Succession Is when an area eventually turns into a forest.
Organic Contains carbon [plants & animals].
Inorganic Non carbon compounds [minerals, water, & air].
Biotic Living [plants & animals].
Abiotic Nonliving [water, air, temperature, rocks].
Habitat Where an organism lives.
Niche What an organism does, how it lives, what its role is in the environment.
Population # of a single species in an area.
Community # of all living things in an area.
Ecosystem Biotic + abiotic factors.
Biosphere Earth.
Biodiversity and Ecosystem Stability Individual- Can survive in a variety of or in changing situations. Population or Species - Larger gene pool to allow for adaptation & evolution. Ecosystem - Allows for recovery from disaster or disease, supports food webs.
Dynamic Equilibrium Slight changes but overall about the same [horizontal squiggly line].
Carrying Capacity Number of organisms a habitat can support.
Renewable Resources Plants & animals. Should be managed carefully.
Nonrenewable Resources Minerals & fossil fuels. Should be recycled.
Burning of Fossil Fuels Releases CO₂, which in considered a "greenhouse gas" that may cause global warming.
Alternative Energy Sources Include nuclear power, wind, water, ethanol, & hydrogen.
Alien / Introduced / Nonnative Species May be a problem because they do not have any natural predators and can then outcompete native species. Example - zebra muscles.
Genetic Engineering Inserting a gene from one organism into another organism's genome [splicing].
Gene Insertion Is useful to have bacteria make insulin, HGH, interferon, ect.
Restriction Enzymes Cut DNA at a specific sequence to jigsaw foreign DNA together.
Created by: tderue
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