| A | B |
|---|
| cell | smallest living unit of structure and function |
| tissue | group of cells with similar structure and function |
| organ | groups of different types of tissues that work together to perform specific functions |
| organ system | group of organs that each performs a different task, but work together to provide a specialized group of functions |
| DNA | genetic material stored in the cell's nucleus |
| chromosomes | strands of DNA |
| 46 | number of chromosomes in a human somatic (body) cell |
| 23 | the number of pairs of chromosomes in a human somatic (body) cell; the number of individual chromosomes in a sex cell or gamete |
| karyotype | map or picture of an individual's chromosomes |
| gene | region on a strand of DNA that regulates one aspect of the cell's activities |
| epithelial | tissue that forms linings and outer surfaces |
| muscle | tissues that contract to provide movement |
| connective | tissues that join other tissues together |
| nerve | tissues that conduct electrical impulses |
| cellular level, tissue level, organ level, system level, organism level | 5 levels of organization |
| dominant | gene variation that will be expressed even if only one copy of the variation is inherited |
| recessive | gene variation that will only be expressed if two copies of the gene variation are inherited |
| mutations, deletions, missing or extra chromosomes | possible causes of inherited pathologies |
| carrier | an individual who has one copy of a particular recessive gene variation but does not display the trait |
