OGT 15-21
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42 terms
Terms | Definitions |
|---|---|
 Atomic Number | The number of protons in the nucleus of an atom. |
| Bacteria | Unicellular, prokaryotic microorganisms that lack chlorophyll and can be seen only with a microscope. |
| Conservation | A careful preservation and protection of something. |
| Convalent | Chemical bonds formed by the shairing of the electrons between atoms. |
| Equilibrium | A state in which opposing forces are balanced. |
| Gas | State of matter that has neither a definite shape nor volume but tends to expand. |
| Hypothesis | A formula derived by inference from scientific data that explains a principle operating in nature. |
| Ion | An atom or group of atoms that carries a positive or negative electric charge as a result of having lost or gained one or more electrons. |
| Isotope | Any of two or more species of atoms with the same atomic number, but with different atomic numbers. |
| Species | A group of organisms consisting of similar indivuals capable of exchanging gases. |
| Mixture | A portion of matter consisting of two or more componets in varying proportions that retain their own properties. |
| Tissue | A mixture of cells usually of a particular kind that act together to preform specific functions in an organism. |
| Solid | A substance that does not flow, can resist forces, and retains a definite size and shape. |
| Ecological | The interactions and relationships between organisms and their environment. |
| Diversity | A great deal of variety. |
| Extinct | A species of organisms that no longer exsist. |
| Organ | A structure consisting of cells and tissues and preforming some specific function in an organisms. |
| Characteristic | A distiguishing trait, feature, quality or property. |
| Alleles | Any of the alternative forms of a gene that mat occur at a given locus on a chromosome. |
| Cell Division | The formation of two daughter cells from one parent cell, mitosis. |
| Fungi | Spore-producin organims including molds, rusts, mushrooms, and yeasts. |
| Flagella | Long-Hair like extensions from the cell surface whose movement is used for locomotion. |
| Cilia | Fine hair-like protusions of the cell surface, which beat in unison to propel the cell through the medium. |
| Heridity | All of the qualities gentically derived from one's ancestors; the realtion between successive generations, by which characteristics persist. |
| Genetic Drift | The process by which gene frequencies are changed. |
| Heritable | Capable of being inherited or of passing by inheritance. |
| Independent Assortment | Each chromosome in a pair that is independent of other chromosomes. |
| Natural Selection | The principle that in an environment, individuals having characteristics that aid survival will produce more offspring, and individuals having such characteristics will increase with each generation. |
| Reproduction | The process by which organisms give rise to offspring. |
| Trait | An inherited characteristic. |
| Adaptation | Adjustment to environmental conditions, modification of an organism that makes it more fit for its environment. |
| Oxidize | To combine with oxygen. |
| Convergent | To come together or tend to come together at a point. |
| Dominant | A gene, that when present, is expressed in the phenotype. |
| Gene | A unit located at a particular point on a chromosome that controls hereditary characteristics. |
| Pattern | A reliable sample of traits, acts, tendencies or other observable characteristics. |
| Asexual Reproduction | Reproducing by processes that do not involve the union of germ cells or egg and sperm. |
| Cell Respiration | Metabolic processes which break down nutrients into usable energy. |
| DNA | Deoxyribonucleic acid, a double strand of self-replicating material that contains the genetic code and transmits the heredity pattern. |
| Evolution | Changes in the genetic composition of a population through successive generations. |
| Jumping Genes | Genes that move from one position on the chromosome to another. |
| Structure | The arrangement of particles or parts in a substance. |
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