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Biology test 1
| Term | Definition |
|---|---|
| Vitalism | The theory that life is a product of a supernatural force. |
| Mechanism | The theory that life is a product of chemical and physical forces |
| Hypothesis | An Educated guess addressing the problem |
| Natural law | The natural limits to the universe |
| Descent with Modification | Refers to the fact that the offspring are different from their parents |
| Natural Selection | Any change in the environment that allows the survival on one trait and the elimination of another within a species |
| Speciation | The evolutionary process if a new species formation |
| Allopatric Speciation | The formation of a new species in which the parent or original species does not continue to coexist alongside the new species |
| Sympatric Speciation | The formation of a new species in which the parent or original species does continue to coexist alongside the new species |
| Biological Species | Any group of organisms capable of producing fertile offspring |
| Macroevolution | The evolutionary process of new species formation |
| Microevolution | The change in characteristics or evolutionary changes within a species |
| Prezygotic Isolation | Natural mechanisms that prevent the formation of a zygote formed by the egg and cells of different species |
| Postzygotic isolation | Natural mechanisms that prevent the survival of a zygote formed by the egg and sperm cells of different species |
| Cell | The smallest unit displaying all the characteristics of being alive |
| Cell theory | the theory that all living things are composed of cells |
| Cell Wall | A layer of cellulose surrounding a plant cell membrane that functions to provide support against the osmotic pressure within a plant cell |
| Vacuole | A temporary storage organelle within a cell |
| Cytoplasm | All materials found within the cell. Includes the liquid cytosol |
| Eukaryotic Cell | Cells with extensive compartmentalization and organelle structures. Eukaryotic cells include all cells except bacteria. |
| Prokaryotic cell | all cells that have minimal compartmentalization and few structural organelles and includes only the bacteria |
| Endoplasmic Reticulum | An organelle composed of membrane tubes as function to receive process and distribute proteins to the Golgi |
| Gene | A sequence of nucleotides found in the DNA of a cell that codes for a specific protein |
| Lysosome | A membrane bound organelle that contains digestive enzymes that function primarily for the breakdown if molecules or tissues |
| Mitochondria | The organelle that converts the energy of sugar to the energy of ATP |
| Nucleus | Organelle that contains the DNA of a cell |
| Plasma Membrane | Also known as the cell membrane and forms the outer boundary of the cell |
| Ribosome | The organelle that produces proteins |