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Cytology
Vocab. Words
Term | Definition |
---|---|
Cytology | The branch of biology concerned with the structure and function of plant and animal cells. |
Cell | the smallest structural and functional unit of an organism |
Organelle | any of a number of organized or specialized structures within a living cell. |
Organism | the material structure of an individual life form. |
Unicellular | consisting of a single cell. |
Multicellular | having or consisting of many cells |
Prokaryotic | bound organelles such as mitochondria |
Prokaryotes | single-celled organism which has neither a distinct nucleus with a membrane nor other specialized organelles |
Eukaroytic | also contain an endoplasmic reticulum and numerous specialized organelles |
Eukaryotes | also contain an endoplasmic reticulum and numerous specialized organelles |
Cell theory | a theory in biology that includes one or both of the statements that the cell |
Virus | a small infectious agent that replicates only inside the living cells of other organisms. |
Tissues | is a cellular organizational level between cells and a complete organ |
Organs | is a collection of tissues joined in a structural unit to serve a common function |
Diffusion/Passive transport | s a movement of ions and other atomic or molecular substances across cell membranes without need of energy input ( passive) is the net passive movement of particles atoms, ions or molecules (diffusion) |
Osmosis- | a process by which molecules of a solvent tend to pass through |
Active transport | the movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy. |
Semi-permeable | allowing certain substances to pass through it but not others, especially allowing the passage of a solvent but not of certain solutes. |
Phagocytosis | the ingestion of bacteria or other material by phagocytes and amoeboid protozoans |
Pinocytosis | the ingestion of liquid into a cell by the budding of small vesicles from the cell membrane. |