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10 Cards in this Set
- Front
- Back
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steps to the scientific method |
1. make an observation
2. ask a question 3. answer question with a hypothesis 4. test hypothesis by concluding an experiment 5. draw conclusions 6. report results |
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classification of all organisms |
Kingdom
Phylum Class Order Family Genus Species |
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how to use a dichotomous key |
detailed list identifying characteristics that include scientific names
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control vs. variable in a given experiment |
control is the standard to which the outcome of a test is compared
variable is something in an experiment that can change |
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scientists and discoveries |
Redi (1568) concluded the maggots hatched from fly eggs
Needham (1745) mistakenly concluded maggots developed spontaneously from broth Spallanzani (1768) boiled broth in sealed flasks, open ones became contaminated Pasteur (1859) boiled broth in s-necked flasks to disprove spontaneous generation and proved biogenesis Oparin (1924) hypothesized that energy from the sun, lightning and Earth triggered chemical reactions that created life Miller & Urey (1953) tested Oparin's theary |
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difference between scientific theory and scientific fact |
scientific theory: an explanation of things or events based on scientific knowledge
scientific fact/law: a statement about how things work in nature that seems to be true all the time |
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spontaneous generation |
idea that living things come from non-living things
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Oparin's hypothesis |
energy from the Sun, lightning and Earth's heat triggered chemical reactions that created life
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stimuli |
a thing or event that evokes a specific functional reaction in an organ or tissue |
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homeostasis |
ability of an organism to keep proper conditions no matter what external stimuli are occurring |
