| Term | Definition |
|---|
| chromosome | 1. a threadlike linear strand of DNA and associated proteins in the nucleus of eukaryotic cells that caries the genes and functions in the transmission of hereditary information 2. a circular strand of DNA in bacteria that contains the herediitary information necessary for cell like |
| equinox | 1. either of two points on the celestial sphere at which the ecliptic intersects the celestial equator 2. either of the two times during a year when the sun crosses the celestial equator and when day and night are approximately equal length |
| gamete | a reproductive cell having the haploid number of chromosomes, esp. a mature sperm or egg capable of fusing with a camete of the opposite sex to produce the fertilized egg |
| hemoglobin | the iron-containing respiratory pigment in red blood cells of vertebrates, consisting of about 6% heme and 94% globin |
| mitosis | 1. the process in cell division by which the nucleus divides, normally resulting in two new nuclei, each of which contains a complete copy of the parental chromosomes 2. the entire process of cell division including division of the nucleus and the cytoplasm |
| nanotechnology | the science and technology of building electronic circuits and devices from individual atoms and molecules |
| photosynthesis | the process by which green plants and certain other organisms synthesize carbohydrates from carbon dioxide and water using light as an energy source and usually releasing oxygen aas a byproduct |
| plasma | 1a. the clear yellowish fluid portion of blood, lymph, or intramuscular fluid in which cells are suspended b. blood plasma 2. [medicine] cell-free sterilized blood plasma, used in transfusions 3. protoplasm or cytoplasm 4. the fluid portion ofmilk from which the curd is separated by coagulation; whey 5. [physics] a highly ionized gas containing nearly equal numbers of positive ions and electrons |
| polymer | any numerous natural or synthetic compounds of usually high molecular weight consisting of repeated linked units, each a relatively ligh and simple molecule |
| quasar | an extremely distant celestial object whose power output is thousands of times that of our entire galaxy |
| taxonomy | 1. the classification of organisms in an ordered system that indicates natural relationships 2. the science, laws, or principles of classification; systematics 3. division into ordered groups or categories |
| tectonic | 1. [geology] relating to, causing, or resulting from structural deformation in the earth's crust 2a. relating to construction or building b. architectural |
| thermodynamics | 1. the branch of physics that deals with the relationships and conversions between heat and other forms of energy 2. thermodynamic phenomena and processes |
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