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Cytology

Vocab. Words

TermDefinition
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