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18 Cards in this Set

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plasma membrane
membrane made of a double layer of lipids(phospholipids cholesterol),proteins are embedded,may extend thru bilayer or on only one face;externally facing proteins and some lipids have atached sugar groups
cytoplasm
cellular region between nuclear & plasma membranes,consists of fluid cytosol containing dissolved solutes,inclusions(stored nutrients,pigment granules,and organelles
mitochondria
rod-like,double membrane structures;inner membrane folded into projections called cristae
ribosomes
dense particles consisting of two subunits,each composed of ribosomal RNA and protein;free or attacheed to rough ER
rough endoplasmic reticulum
membrane system enclosing a cavity,the cisterna,and coiling thru the cytoplasm;externally studded w/ ribosomes
smooth endoplasmic reticulum
membranous system of sacs and tubules;free of ribosomes
golgi apparatus
stack of smooth membrane sacs close to the nucleus
lysosomes
membranous sacs containing acid hyrolases
peroxisomes
membranous sacs of oxidase enzymes
microtubules
cylindrical structures made of tubulin proteins
microfilaments
fine filaments of the contractile protein actin
intermediate filaments
protein fibers;composition varies
centrioles
paired cylindrical bodies,each composed of nine triplets of microtubules
vaults
barrel-shaped protein structures;in cytosol adjacent to nuclear pores
nucleus
surrounded by the nuclear envelope;contains fluid nucleoplasm,nucleoli,and chromatin
nuclear envelope
double membrane structure;pierced by the pores;continuous with the cytoplasmic ER
nucleoli
dense spherical(non-membrane-bounded)bodies
chromatin
granular,thread-like material composed of DNA and histone proteins