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chp 4 vocab
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Biology
Undergraduate 1
06/11/2012

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Term
Cytosol
Definition
A protien-rich, jelly-like fluid in which cells organelles are immersed.
Term
Endomembrane system
Definition
An interactive group of membrane-lined organelles and transport vesicles within the eukaryotic cells
Term
Flagella
Definition
relatively long, tail-like extensions of some cells that function in cell movement
Term
Gap Junction
Definition
A Protien assemblage that fom a communication channel between adjacent animal cells.
Term
Intermediate filament 
Definition
Filaments of the cytoskeleton intermediate in diameter between microfilaments and microtubules.
Term
Golgi Complex
Definition
Network membranes that processes and distributes protiens that come to it from the rough ER.
Term
Lysosome 
Definition
An organelle found in aminal cells that digest worn-out cellular materials and foreign materials that enter the cell.
Term
microfilament
Definition
made of the protein actin serving as a support or structural filaments in almost all eurkaryotic cells.
Term
Micrograph
Definition
pictures taken with the aid of microscopes
Term
Micrometer
Definition
A millionth of a meter
Term
Microtubule
Definition
the largest of the cytolskeletal filaments, microtubules take the form of hollow tubes composed of protein tubes tubulin , gives structure to cell by serving as rails trasport cells move and form celluar extensions called cilia and/or flagella.
Term
Mitochondria 
Definition
Organelles that are the primary site of energy conversion in eurkaryotic cells
Term
Nanometer
Definition
A Billionth of a meter
Term
Nuclear Envelope
Definition
the double membrane that lines the nucleus in eukaryotic cells
Term
Nucleolus
Definition
the area w/in the nucleous of a cell devoted to the production on ribosomal RNA.
Term
Nucleus
Definition
membrane lined componment that encloses the primary componment of DNA in Eurkaryotic cells.
Term
Organelle
Definition
A highly organized structure w/in a cell that carries out specific cell functions organelles "little Cells" are bound by membranes.  The extenstions is the ribosome , which has no membrane and is the single organelle possessed prokaryotic cells (bacteria and archaea), organelle in eurkaryotic cells are composed of the cell nucleus, mitchondria, lysosome, choroplasts and ribosomes.
Term
Plasma Membrane
Definition
outer lining of a cell
Term
Plasmodesmata
Definition
channels in plant cell wall that make possiable communication between plant cells the structure of these channels means that the cytoplasm one plant is continous with another.
Term
prokaryotic cell 
Definition
cells whose DNA is not enclosed in the nucleus.
Term
ribosome
Definition
an organeel that serves as protien synthesis with in a cell
Term
Rough Endoplasmic Reticulum
Definition
A network of membranes, found in the cytoplasm of eukaryotic cells, that aid in the processing of proteins.
Term
Smooth Endoplasmic Reticulum 
Definition
a network of membranes within the eukaryotic cell that is the site of the synthesis of various lipids and site at which potentially harmful substances are detoxifed
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