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Levels of Biological Organization. Biosphere. Our entire planet Earth and all its living inhabitants. Ecosystem. Living things in a particular region and their nonliving physical environment. Community. The living part of an ecosystem. Population.
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Biosphere Our entire planet Earth and all its living inhabitants.
Ecosystem Living things in a particular region and their nonlivingphysical environment.
Community • The living part of an ecosystem.
Population • Group of individuals of a particular type that live in the same area and actively interbreed with one another.
Organism • Independent individual.
Organ system • Body part arranged to carry out a particular general function within the organism.
Organ • Group of tissues that perform specialized function.
Tissue • Group of similar cells.
Cell • The simplest entity that has all the properties of life.
Organelle • Structure that performs specialized function for the cell.
Molecule • Clusters of atoms.
Atom • The smallest unit of matter that still has distinct chemical properties.
Subatomic particles • Fundamental units of energy and matter.
All levels can be grouped in 3: • Cellular • Organismal • Populational
Review • Clusters of atoms. (molecules) • Our entire planet earth. ( ? ) • Independent individual. ( ? ) • Group of similar cells. ( ? ) • All of the various species living in the same area. ( ? ) • Structure that performs specialized function for the cell. ( ? )
Question 1 • Which of the following is defined as “the living part of an ecosystem?” • A. biosphere. • B. community. • C. organism. • D. population. • E. ecosystem.
Question 2 • Which of the following is defined as “group of individuals of a particular type that live in the same area and actively interbreed with one another?” • A. ecosystem. • B. community. • C. population. • D. organism.
Answers Question 1: B. community. Question 2: C. population.