OGT Life Science
About this set
Created by:
kahlemiller on January 31, 2010
Subjects:
Classes:
OGT Coach Science, Tutor-Lyons, NRHS Science
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27 terms
Terms | Definitions |
|---|---|
 abiotic | Non-living. |
| alleles | Any of the alternative forms of a gene that may occur at a given locus on a chromosome. |
| asexual reproduction | Involving or reproducing by reproductive processes (as cell division, spore formation, fission or budding) that do not involve the union of germ cells or egg and sperm. |
| biogeochemical cycles | Relating to the partitioning and cycling of chemical elements and compounds between the living and nonliving parts of an ecosystem. |
| biomass | The amount of living matter. |
| biotechnology | Biological science when applied especially in genetic engineering and recombinant DNA technology. |
| cell division | The formation of two daughter cells from one parent cell, mitosis. |
| cell respiration | Metabolic processes which break down nutrients into usable energy. |
| chemosynthesis | Synthesis of organic compounds (as in living cells) by energy derived from chemical reactions. |
| chromosome | A threadlike structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the form of genes. |
| differentiation | The sum of the processes whereby apparently indifferent cells, tissues and structures attain their adult form and function. |
| ecological | The interactions and relationships between organisms and their environment. |
| emigration | A category of population dispersal covering one-way movement out of the population area. |
| eukaryotic | An organism composed of one or more cells containing visibly evident nuclei and organelles. |
| evolution (biological) | Changes in the genetic composition of a population through successive generations. |
| fermentation | An enzymatically controlled anaerobic breakdown of an energy-rich compound. |
| flagella | Long hair-like extensions from the cell surface whose movement is used for locomotion. |
| gene | A functional hereditary unit located at a particular point on a chromosome that controls or acts in the transmission of hereditary characteristics. |
| genetic drift | The process by which gene frequencies are changed. |
| homeostasis | A state of equilibrium between different but interrelated functions or elements, as in an organism or group. |
| mitochondria | Cell structure responsible for cellular respiration. |
| parasite | An organism living in, with or on another organism in which a parasite obtains benefits from a host that it usually injures. |
| photosynthesis | The chemical process by which chlorophyll-containing plants use light to convert carbon dioxide and water into carbohydrates, releasing oxygen as a byproduct. |
| physiology | The biological science of essential and characteristic life processes, activities and functions. |
| prokaryotic | A cellular organism (such as a bacterium or a blue-green alga) that does not have a distinct nucleus. |
| respiration | The physical and chemical processes by which an organism supplies its cells and tissues with the oxygen needed for metabolism and relieves them of the carbon dioxide formed in energy-producing reactions. |
| segregation | The separation of two alleles in a heterozygote when gametes are formed. |
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