click below
click below
Normal Size Small Size show me how
hbailey-Characterist
Biology Vocab for C Period Biology
| Term | Definition |
|---|---|
| Biology | The science of life and living things |
| Organism | A form of life considered as an entity; an animal, plant, fungus, protistan, or moneran |
| Tissue | An mass of similar cells and cell products forming a definite kind of structural material with a specific function, in a multicellular organism. |
| Organ | A grouping of tissues into a distinct structure, as a heart or kidney in animals or a leaf or stamen in plants, that performs a specialized task. |
| Prokaryote | any cellular organism that has no nuclear membrane, no organelles in the cytoplasm except ribosomes, and has its genetic material in the form of single continuous strands forming coils or loops |
| Eukaryote | any organism having as its fundamental structural unit a cell type that contains specialized organelles in the cytoplasm, a membrane-bound nucleus enclosing genetic material organized into chromosomes, and a system of division by mitosis or meiosis |
| Sexual reproduction | reproduction involving the union of gametes. |
| Asexual reprodyuction | reproduction, as budding, fission, or spore formation, not involving the union of gametes |
| Growth | size or stage of development |
| Development | the act or process of developing; growth; progress |
| Metabolism | the sum of the physical and chemical processes in an organism by which its material substance is produced, maintained, and destroyed, and by which energy is made available. |
| Autotroph | any organism capable of self-nourishment by using inorganic materials as a source of nutrients and using photosynthesis or chemosynthesis as a source of energy, as most plants and certain bacteria and protists. |
| Heterotroph | an organism requiring organic compounds for its principal source of food. |
| Irritability | the ability to be excited to a characteristic action or function by the application of some stimulus |
| Stimulus | something that excites an organism or part to functional activity. |
| Response | any behavior of a living organism that results from an external or internal stimulus. |
| Homeostasis | the tendency of a system, especially the physiological system of higher animals, to maintain internal stability, owing to the coordinated response of its parts to any situation or stimulus that would tend to disturb its normal condition or function. |
| Energy | the capacity for vigorous activity; available power |
| Adaptation | any alteration in the structure or function of an organism or any of its parts that results from natural selection and by which the organism becomes better fitted to survive and multiply in its environment. |
| Evolution | change in the gene pool of a population from generation to generation by such processes as mutation, natural selection, and genetic drift. |