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Bio notes - 31 Aug(read-only)

Bio notes - 31 Aug(read-only) - Hierarchy of Biology Atoms...

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Hierarchy of Biology - Atoms Biological molecules Organelles Cells Tissues Organs Organ systems Organisms Populations Communities Ecosystem Biosphere. - Population: A population of all of the same species. - Communities: All of the different living things in a certain area. - Ecosystem: A community and its environment. o Includes abiotic things. - Biosphere: all of the systems on Earth. Organisms are open systems that interact continuously with their environment. Cells are the basic unit of structure and function in an organism - Open or closed systems. - An open system is a system that exchanges matter and energy with its environment. - A closed system is a system that does not exchange matter/energy with its environment. The continuity of life is based on the heritable info. In DNA. Structure and function are correlated at all levels of biological organization. - Cells contain chromosomes made partly of DNA, the substance of genes.
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