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7 Cards in this Set
- Front
- Back
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What is life from a biological perspective?
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It is the study of life from the microscopic scale of cells and molecules to the global scale of the biosphere.
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What are the levels of biological organization?
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Atoms, Molecules, Organelles, Cells and Tissue, Organs, Organism, Population, Community, Ecosphere, Biosphere
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Biologists say life has unity and diversity. What do they mean by this?
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Unity of life refers to the descent from a common ancestor. Diversity of life is the modification as a species diverged from their ancestors.
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Distinguish between Prokaryotes and Eukarotes
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Prokaryotes are cells that have no nucleus and are mostly bacteria. Eukaryotes are the common cell of most organisms having internal structures divided by membranes and has a nucleus housing the DNA.
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Explain the evolutionary view of diversity including the mechanism of natural selection.
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Evolution is the decent from a common ancestor with natural selection being the modification of a species.
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Key points of natural selection and evolution
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Natural Selection -evolutionary adaptation, the accumulation of favorable traits in a population over time....Evolution - A species living today are descendants of ancestral species.
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What does the term "theory" mean to scientists?
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A broader scope of science with a greater diversity of observations supported by a growing body.
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