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Vocab. Words

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.
Created by: Darylen