CHROMOSOME AND CELL DIVISION Despite the diversity among cells three basic features are common to all cell types All cells have outer boundary an interior substance and a control region CELL STRUCTURE AND FUNCTION ID: 765304
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CHROMOSOME AND CELL DIVISION
Despite the diversity among cells, three basic features are common to all cell types. All cells have outer boundary, an interior substance and a control region. CELL STRUCTURE AND FUNCTION
CELL STRUCTURES
PLASMA MEMBRANE Composition: phospholipid bilayer with embedded proteins. Function: selective passage of molecules into and out of cell
NUCLEUS Composition: nuclear envelope surrounding nucleoplasm, chromatin and nucleolus Function: storage of genetic information, controls metabolic functioning and structural characteristics of the cell.
RIBOSOMES Composition: protein and RNA in two subunits Function: Protein synthesis
ENDOPLASMIC RETICULUM Composition: membranous saccules and canals Function: synthesis and /or modification of proteins and other substances, and transport by vesicle formation
GOLGI APPARATUS Composition: stack of membranous saccules Function: Processing, packaging, and distribution of molecules
VACUOLE AND VESICLE Composition: membranous sac Function: storage and transport substances
LYSOSOME Composition: membranous vesicle containing digestive enzymes Function: intracellular digestion
MITOCHONDRION Composition: inner membrane (cristae) within outer membrane Function: cellular respiration
CYTOSKELETON Composition: microtubles, actin filaments Function: shape of the cell and movement of its parts.
STRUCTURE OF THE CYTOSKELETON
CILIA AND FLAGELLA Composition: 9 + 2 pattern of microtubules Function: movement of cell
CENTRIOLE Composition: 9 + 0 pattern of microtubules Function: formation of basal bodies