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Geraud Chapter 1
Chapter 1 Key Terms
| Question | Answer |
|---|---|
| scientific method | Procedures used to solve problems and answer questions. |
| hypothesis | Prediction that can be tested. |
| variable | Something in an experiment that can change. Should only test one at a time. |
| theory | An explanation of things or events based on scientific knowledge resulting from many observations and experiments. |
| law | Statement about how things work in nature that seems to be true consistently. |
| organism | any living thing |
| cell | smallest unit of an organism that can carry on life functions. |
| homeostasis | regulation of an organism's internal, life-maintaining conditions. |
| 5 Traits of Living Things | Living things are organized, respond, use energy, grow & develop, and reproduce. |
| Needs of Living Things | food, water, living space, air |
| Source of energy for life on Earth | Sun |
| spontaneous generation | idea that living things come from nonliving things. |
| biogenesis | theory that living things come only from other living things. |
| Francesco Redi | Performed an experiment to disprove spontaneous generation using raw meat. |
| Louis Pasteur | Performed an experiment to disprove spontaneous generation using broth in S-necked flasks. |
| Alexander Oparin | Scientist that hypothesized that energy from the Sun, lightning and Earth's heat triggered chemical reactions to form life. |
| 6 Kingdoms of Life | animal, plant, fungi, protist, eubacteria, and archeabacteria |
| binomial nomenclature | two-word naming system that gives all organisms their scientific name. |
| genus | first word of the two-word scientific name used to identify a group of similar species. |
| scientific name | genus species name in Latin for a species. |
| Aristotle | Greek philosopher who created a classification system for living things. |
| Linnaeus' Classification System | New system for grouping organisms based on similar structures. |
| Uses of scientific names | Helps avoid mistakes, gives descriptive information, organizes species easily. |
| dichotomous key | A detailed list of identifying characteristics that includes scientific names. |