click below
click below
Normal Size Small Size show me how
chapter 3 human pers
cells
| Term | Definition |
|---|---|
| cell theory | the principal that all living organisms are made up of cells and the materials produced by the cell. |
| cell membrane | a membrane that forms the external boundary of a cell |
| cytoplasm | contents of a cell, excluding the nucleus |
| organelles | structures within the cytoplasm of a cell, each with specific functions |
| cytosol | the liquid part of the cytoplasm of the cell |
| cytoskeleton | an internal scaffolding of protein fibres within the cytoplasm of the cell. |
| inclusions | chemical substances inside a cell in the form of granules or droplets. |
| nucleus | a large organelle in a cell, contains DNA |
| nuclear membrane | a membrane that separates the nucleus of a cell from the cytoplasm |
| nuclear pores | gaps in the nuclear membrane in which messages pass through |
| DNA | a molecule in the nucleus of a cell that determines the types of proteins that a cell can make |
| chromosomes | one of the 46 rod like structures that appear in the nucleus of a human cell at the commencement of cell division |
| nucleolus | a structure within a cells nucleus, involved in protein synthesis. |