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Biology: Chapter 4.2
Chapter 4.2 Vocabulary
Term | Definition |
---|---|
Plasma Membrane | a cells' outer boundary |
Cytoplasm | the region of the cell that is within the plasma membrane and that includes the fluid, the cytoskeleton, and all of the organelles except the nucleus |
Cytosol | the part of the cytoplasm that includes molecules and small particles, such as ribosomes, but not membrane-bound organelles |
Nucleus | membrane-bound organelle that contains the cells' DNA |
Prokaryote | organisms that lack a membrane-bound nucleus and membrane-bound organelles |
Eukaryote | organisms made up of one or more cells that have a nucleus and membrane-bound organelles |
Organelle | well-defined, intracellular bodies that perform specific functions for the cell |
Tissue | a group of similar cells and their products that carry out a specific function |
Organ | groups of tissue that perform a particular job in an organism |
Organ System | a group of organs that accomplish related tasks |