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Section 1.1 and 1.3
The CharactersisticsofLifeClassificationofLivingThingsOrganizationofthebiosphere
| Question | Answer |
|---|---|
| cell | the smalles unit of lie |
| tissue | a group of similiar cells that perfome a particular function |
| organ | several tissues joined together |
| organ system | a group of related organs working together |
| organism | an individual living thing |
| Energy | the capacity to do work |
| Genes | contain hereditary info in the form of DNA molecules |
| Reproduce | to make more of oneself |
| metabolism | all the chemical reactions of the cell |
| behavior | the movement of an organism (self-directed or in response to stimuli). Usually directed towards lessening injury, finding food, and reproducing. |
| Homeostasis | Maintenance of normal internal conditions in a cell or an organism by means of self-regulating mechanisms |
| Development | all changes tha take place between conception and death |
| Species | a group of organisms that can successfully interbreed and produce fertile offspring |
| Adaptations | features that a species possess that makes them better suited to the new enviornment |
| Natural Selection | Mechanism of evolution caused by environmental selection of organsims most fit to reproduce; results in adaptation to the environment |
| Evolution | the change in the frequency of traits in populations and species |
| Systematics | the discipline of identifying and classifying organsims according to specific criteria |
| Species, family, order, class, phylum, kingdom, and domain | The different classification levels of organisms starting witht the most specific and becoming more general with each level |
| Archaea | One of the three domains of life; contains prokaryotic cells that often live in extreme habitats and have unique genetic, biochemical, and physiological characteristics |
| Bacteria | One of the three domains of life; contains prokaryotic cells that have their own unique genetic, biochemical, and physiological characteristics |
| Eukarya | One of the three domains of life, consisting of the kingdoms Protista, Fungi, Plantae, and Animalia |
| Prokaryotes | A cell lacks a membrane-bounded nucleus and organelles; found in the domain Archaea and Bacteria |
| Eukaryotes | Type of cell that has a membrane-bounded nucleus and organelles; found in organisms within the domain Eukarya |
| Protists (kingdom Protista) | unicellular or multicellular, can ingest or make thier own food |
| Fungi (kingdom Fungi) | decomposer |
| Plants (kingdom Plantae) | multicellular photosynthesizers |
| animals | multicellular and ingest food |
| Taxonomy | the assignment of a binomial, or two-part name, to each species |
| Biosphere | the zone of air, land, and water at the surface of Earth where living organisms are found |
| Population | all the members of a species within a particular area |
| community | all the different in the same area that ineract among themselves and with the physical environment |
| ecosystem | Biological community together with the associated abiotic environment; characterized by energy flow and chemical cycling |
| Biodiversity | encompasses the total number of species, the variability of their genes, and the ecosystems in which they live |
Created by:
kperks
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