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13 Cards in this Set

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Plasma membrane
phospholipid bilayer containing cholesterol and proteins and some carbs. forms a selectively permeable boundary of the cell
acts as a physical barrier to enclose cell contents; regulates material movement into and out of the cell; establishes and maintains an electrical charge difference across the plasma membrane; functons in cell communication
cilia
short, numerous membrane extensions supported by microtubules, which occur on exposed membrane surfaces of some cells
move substances over the cell surface
nucleus
large structure enclosed within a double membrane; contains chromatin, nucleolus, and nucleoplasm
houses the DNA that serves as the genetic material for directing protein synthesis
nuclear envelope
double membrane boundary between cytoplasm and nuclear contents; continuous wiht rough endoplasmic reticulum
seperates nucleus from cytoplasm
nuclealus
large, prominent structure within the nucleus
functions in synthesis of ribosomes
cytoplasm
contents of cells between the plasma membrane and nuclear envelope
responsible for many cellular processes
cytosol
viscous fluid medium with dissolved solutes
provides support for organelles; serves as the viscous fluid medium through which diffusion occurs
rough endoplasmic reticulum
extensive interconnected membrane network that varies in shaper; ribosomes attached on cytoplasmic surface
modifies, transports, and stores proteins produced by attached ribosomes; these proteins are secreted, become components of the plasma membrane, or serve as enzymes of lysosomes
smooth endoplasmic reticulum
extensive interconnected membrane network lacking ribosomes
synthesizes, transports, and stores lipids; metablizes carbs; detoxifies drugs, alcohol, and poisons; forms vesivles and peroxisomes
golgi apparatus
series of several elongated, flattened saclike membranous structures
modifies, packages, and sorts materials that arrive from the ER in transport vesicles; forms secretory vesices and lysosomes
lysosomes
spherical-shaped membrane-bound organelles formed from the golgi aparatus
digest microbes or matierls
mitochondrion
double membrane-bound organelles containing a circular strand of DNA
synthesize most ATP during aerobic cellular respiration by digestion of fuel molecules in the presence of oxygen
ribosomes
organelles composed of oth protein and ribosomal RNA that are organized into both a large and small subunit; may be bound to a membrane or free in cytosol
engange in protein syhtnesis; bound ribosomes produce proteins that are secreted, incoprorated into plasma membrane, and wihtin lysosomes; free ribosomes produce proteins used wihtin the cell