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Chapter 3.2

composite cell -terms and key details

TermDefinition
nucleus contains genetic material called DNA, which directs the cells function
nuclear envelope nucleus is innermost and enclosed by a thin membrane called nuclear envelope
cytoplasm the contents of a cell including a gel like cytosol and organelles excluding the nucleus, which is enclosed by the cell membrane
cell membrane permeable outer boundary of a cell containing phospholipid bilayer embedded with proteins
organelles any structure in the cell that has a specialized function
cell membrane contains lipids, proteins , carbohydrates
signal transduction allows the cells to receive and respond to messages
plasma memebrane thin and flexible outer membrane that separates the two major fluid compartments the intercellular or cytosol, and extracellular fluid outside the cell
bilayer a structure consisting of two molecular layers, such as phospholipids bilayer of the cell membrane
receptors respond to extracellular signals
pores, channels, carriers transports small molecules and ions, transduce signals
enzymes catalyze chemical reactions
cell surface proteins establish self
cellular adhesion molecules enables cells to stick to each other-guides cells as they move
calcium channels antihypertensives-antiangina-chest pain
sodium channels antiarrhythmics, diuretics-local antiesthetic
chloride channels anticonvulsants-muscle relaxants
potassium channels antihypertensives, antidiabetics, -non insulin dependent
glycoproteins membrane chains attached with short carbohydrate chains on their external surfaces
selectively cellular membrane one that regulates which substances enter or leave the cell
cellular adhesion called a selectin binds a moving cell
Created by: eadskyl1
 

 



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