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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. |