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26 Cards in this Set

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Plasma Cell Membrane
Contains receptors for communication; forms intercellular connections; acts as physical barrier to enclose cell contents; regulates material into and out of the cell
Cytoplasm
Site of metabolic processes of the cell; stores nutrients and dissolved solutes
Cytosol
Provides support for organelles; serves as viscous medium through which diffusion occurs
Organelles
Carry out specific metabolic activities of the cell
Rough ER
Synthesizes proteins for secretion, new proteins for the cell membrane, and lysosomal enzymes; transports and stores molecules
Smooth ER
Synthesizes lipids (steroids, fatty acids, and phosolipids); metabolizes carbohydrates; detoxifies drugs, alcohol
Golgi apparatus
Modifies, packages, and sorts newly synthesized proteins for secretion, inclusion in new plasma membrane, or as enzymes in new lysosomes
Lysosomes
Digest materials or microbes ingested by cell; remove old/damaged organelles; self-destruct (autolysis)
Peroxisomes
Converts hydrogen peroxide formed during metabolism to water
Mitochondria
Synthesize most ATP during cellular respiration; "powerhouse of cell"
Ribosomes
Synthesize proteins for:

1) use in the cell (free ribosomes)

2) secretion, incorporation into plasma membrane, or as enzymes in lysosomes (fixed ribosomes)
Cytoskeleton
Provides structural support; facilitates cytoplasmic streaming, organelle and cellular motility, transport of materials, and chromosomal movement and cell division
Microfilaments
Maintain cell shape; aid in muscle contraction and intracellular movement; separate dividing cells
Intermediate filaments
Provide structural support; stabilize cell junctions
Microtubules
Support cell; hold organelles in place; maintain cell shape and rigidity; direct organelle movement within cell and cell motility as cilia and flagella; move chromosomes at cell division
Centrosome
organizes microtubules; participates in spindle formation during cell division
Centrioles
Organize microtubules during cell division for movement of chromosomes
Cilia
Move fluid, mucus, and dissolved materials over some exposed cell surfaces
Flagellum
Propels sperm cells in human male
Microvilli
Increase membrane surface area for increased absorption and/or secretion
Inclusions
Store materials
Nucleus
Acts as cell control center; controls all genetic information (DNA); site of ribosome subunit assembly
Nuclear envelope
Pores in envelope regulate exchange of materials with the cytoplasm
Nuclear pores
Allow for passage of materials between nucleus and cytoplasm
Nucleolus
Synthesizes RNA and assembles ribosomes in the nucleus
Chromatin and chromosomes
Genetic material to control cell function