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Biology Terms (Semester 1)
N/A
29
Biology
9th Grade
10/06/2009

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Term
Main forms of energy
Definition
solar energy and chemical energy
Term
Ecology
Definition
scientific study among organisms, between organisms, and their environment
Term
Biosphere
Definition
all parts of the planet
Term
Species
Definition
individuals that are so similar that they can breed [and produce fertile offspring]
Term
Population
Definition
species that live in the same area
Term
Community
Definition
populations that live in the same area
Term
Ecosystem
Definition
organisms that live in a praticular area together with their environment
Term
Biome
Definition
group of ecosystems that have the same climate and dominant communities
Term
Photosynthesis
Definition
co2 + h2o ----> c6h12o6 + o2
Term
Biogeochemical cycle
Definition
cycles that connect biological, geological, and chemical processes
Term
Nitrogen
Definition
needed for building proteins
---> nitrogen fixtation and denitrification
Term
Carbon
Definition
needed for living tissue
---> photosynthesis included in the carbon cycle
Term
Phosphorus
Definition
DNA and RNA
---> stored in rock
Term
Nitrogen Fixation
Definition
bacteria turns nitrogen gas into ammonia
Term
Denitrification
Definition
nitrates back into nitrogen gas
Term
Transpiration
Definition
evaporation of water from leaves and plants into the atmosphere
Term
Primary Productivity
Definition
rate at which oragnic matter is produced
Term
Algal Bloom
Definition
aquatic environment recieves a large input of one nutrient
Term
Autotroph (Producer)
Definition
organism that can capture eergy from sunlight or chemicals and use it to produce to food
Term
Biodiversity
Definition
Biological diversity, the sum total of the variety of organism in the biosphere
Term
Biogeochemical Cycle
Definition
Process in which chemical compounds, and other forms of matter are passed from one organism to another and from one part of the biosphere to the other.
Term
Biomass
Definition
total amount of living tissue within a given trophic level
Term
Abiotic Factor
Definition
physical or non living factor that shapes an ecosystem
Term
Acid Rain
Definition
rain containing nitric and sulfuric acids, usually occurs in polluted areas
Term
Adaptation
Definition
inherited characteristic that increase an organisms chance of survival
Term
Biotic factor
Definition
biological influence on organisms within an ecosystem
Term
Cell
Definition
collection of living matter enclosed by a barrier that separates the cell from its surroundings, basic unit of all forms of life
Term
cell theory
Definition
-all living things are composed of cells
-cells are basic unit and structure or life
-new cells are produced in living cells
Term
Cell wall
Definition
strong supporting later around the cell membrane in plants, algae, and some bacteria
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