Term
|
Definition
| an organ specialized to secrete or excrete substances for further use in the body for elimination |
|
|
Term
|
Definition
| net movement of a substance across a membrane against a concentration or electrical gradient; requires release and use of cellular energy |
|
|
Term
|
Definition
| dense structure, composed of tightly coiled DNA strands and associated histones, that become visible in the nucleus when a cell prepares to undergo mitosis or meiosis; normal human somatic cells contain 46 chromosomes a piece |
|
|
Term
|
Definition
| regional differences in the concentration of a particular substance |
|
|
Term
|
Definition
| a substance that breaks down into ions when in solution and is capable of conducting an electric current |
|
|
Term
|
Definition
| DNA; a nucleic acid consisting of a chain of nucleotides that contain the sugar deoxyribose and the nitrogenous bases adenine, guanine, cytosine, and thymine |
|
|
Term
|
Definition
| the substance of a cell other than that of the nucleus |
|
|
Term
|
Definition
| excessive, above normal, tone or tension |
|
|
Term
|
Definition
| below normal tone or tension |
|
|
Term
|
Definition
| having a uniform tension; of the same tone |
|
|
Term
|
Definition
| any sheet or partition; a layer consisting of an epithelium and the underlying connective tissue |
|
|
Term
|
Definition
| the division of the cell nucleus; often followed by division of the cytoplasm of a cell |
|
|
Term
|
Definition
| specialized structures in a cell that perform specific metabolic functions |
|
|
Term
|
Definition
| a group of similar cells specialized to perform a specific function; primary tissue types are epithelial, connective, muscle, and nervous tissues |
|
|
