1. Theory: An explanation for a general class of phenomena that is supported by
a wide body of evidence.
2. All Living Organisms...: 1. Cells (membrane-bound)
2. Replication (can reproduce)
3. Evolution (populations are continually evolving)
4. Information (process hereditary information encoded in genes)
5. Energy (Acquire and use energy)
3. Hypothesis: A testable statement that explains a set of
observations. 4. Prediction: A measurable or observable result of an
experiment based on a hypothesis.
5. Cell Theory: The theory that all organisms are made of cells and that all cells
come from preexisting cells.
6. Cell: -a highly organized compartment
-bounded by a plasma membrane
-containing concentrated chemicals in an aqueous solution
7. Spontaneous Generation: Hypothesis stating that life could arise from
nonliving matter.
8. Evolution: Change in a population's characteristics over time
9. Natural Selection: -how evolution occurs
1. Individuals must vary in characteristics that are heritable
2. Certain versions of heritable traits help individuals reproduce more than other
versions
10. Heritable: Referring to traits that can be passed from one
generation to the next.
11. Population: A group of individuals of the same species
living in the same geographic area at the same time.
12. Fitness: Ability of an organism to survive and reproduce in
its environment 13. Adaptation: Any heritable trait that
increases the fitness of an individual with that trait
14. Speciation: occurs when populations diverge to form new species
15. The tree of life: -all species come from preexisting species
-all species trace ancestry to a single common ancestor
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