cell structure Flashcards

cilia
Terms Definitions
plasma membrane
phospholipid bilayer with associated proteins
cytoplasm
composed of cytosol and organelles
cytosol
thick, gel-like fluid. composed of water and proteins
organelles
formed bodies
centrioles
composed of nine groups of three microtubules, forming a cylinder
cilia
long, slender projections of the plasma membrane of certain cells
flagellum
long, whip like structure
microvilli
numerous tiny folds of the plasma membrane
ribosomes
very small, spherical structures composed of 60% RNA and 40% protein
rough ER
branching tubules that may be flattened or tubular, with attached ribosomes
smooth ER
branching tubules that may be flattened or tubular, without ribosomes
golgi apparatus
series of flattened, disc-shaped sacs
mitochondria
spherical or sausage;shaped with inner folded membrane
lysosomes
small, spherical
peroxisomes
spherical, smaller than lysosomes
nucleus
large structure composed of double membrane
nuclear envelope
double membrane with large nuclear pores
nucleoplasm
gel-like fluid consisting of water, nucleic acids, and proteins
nucleoli
small spheres containing RNA and proteins
chromatin
threadlike material composed of DNA and proteins
cytoskeleton
rods of protein
secretory vesicle
membranous sac
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