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Mr. Biando's Lab

Life Sci PSSA Glossary

TermDefinition
allele Any of a set of possible forms of genes
biochemical conversion The changing of organic matter into other chemical forms
biological diversity The variety and complexity of species present and interacting in an ecosystem and the relative abundance of each.
biomass conversion The changing of organic matter that has been produced by photosynthesis into useful liquid, gas or fuel.
biomedical technology The application of health care theories to develop methods, products and tools to maintain or improve homeostasis.
biotechnology The ways that humans apply biological concepts to produced products and provide services
dichotomous A community of living organisms and their interrelated physical and chemical environment
embryology The branch of biology dealing with the development of living things from fertilized egg to its developed state
enzyme A protein that increases the rate of a chemical reaction without being changed by the reaction; an organic catalyst.
evolution A process of change that explains why what we see today is different from what existed in the past; it includes changes in the galxies, stars, solar system, earth and life on earth. Biological evolution is a change in hereditary characteristics of groups
extinction The complete elimination of a species from the earth
homeostasis The tendency for a system to remain in a state of equilibrium by resisting change
intergrated pest management A variety of pest control methods that include repairs, traps, bait, poison, etc. to eliminate pests
lentic Relating to or living in still water
lotic Relating to or living in actively moving water
mitosis The sequential differentiation and segregation of replicated chromosomes in a cell's nucleus that precedes complete cell division
theory of evolution A theory that the various types of animals and plants have their origin in other preexisting types and that the distinguishable differences are due to modification in successive generations
trophic levels The role of an organism in nutrient and energy flow within an ecosystem (herbivore, carnivore, decomposer)
herbivore an organism that eats plants
decomposer an organism that obtains nutrients by eating dead organic matter, thereby making nutrients accessible to other organisms.
consumer organisms that obtain energy by feeding on other organism and their remains
environment The total surroundings of a plant or animal including other plants or animals, climate and location.
mitigation The policy of constructing or creating man made habitats, such as wetlands, to replace those lost to development
niche The role played by an organism in an environment.
pest A label applied to an organism when it is in competition with humans for the same resorce
stream order Energy and nutrient flow that increases as water moves towards the oceans (from small stream to river to ocean)
succession The series of changes that occur in an ecosystem with the passing of time
sustainability The ability to keep in existence or maintain.
waste stream The flow of waste materials from generation, collection and separation to disposal.
watershed The land area from which surface runoff drains into a stream, channel, lake, reservoir or other body of water.
wetlands lands where water saturation is the dominate factor determining the nature of the soil development and the plant and animal communities
Created by: dbiando
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