CELL PARTS
Parts used for Cell Structure and Cell Division (Page 84)
CYTOSKELETON
CYTOSKELETONLocated in cytosol of the cytoplasm
STRUCTURE
Network of thin tubes and filaments (Made of Protein) that crisscrosses the cytosol
Made up of Microfilaments, Microtubules and Intermediate Filaments
FUNCTION Gives shape to the
cell(like the inside of a tent)
Plays important roles in intracellular transport Act as internal tracks (for example:the movement of vesicles and organelles)
Cellular division.
MICROTUBULES
STRUCTURE Hollow tubes made of
coiled tubulin (a type of protein)
Two subunits: Alpha and Beta
Tubulin Radiate outward from
the centrosome near the nucleus
FUNCTION Chromosome
Movement(Cell Division)
Hold organelles in place and assists in organelle movement
Cell Motility – Make up Cilia and Flagella
Maintains cell’s shape
Microtubules
Microfilaments
Structure Two strands of
intertwined actin protein
Looks like a rope
Function Maintains cell’s
shape and movement of cytoplasm
Cell Motility (ex: White blood Cells)
Cell Division **Muscle cell
Contraction
MICROFILAMENTS
Intermediate Filaments
Structure Protein fibers
coiled into cables
Function Rods that anchor
nucleus and other organelles in their place
Maintains cell shape and Nucleus Shape
Intermediate Filaments
CENTROSOMES & CENTRIOLES
Centrioles and Centrosomes
Centrosome Structure Contain two centrioles
Centrosome Function Microtubule
Organizing Center Contains two
centrioles in the animal cell
Centrioles Structure Two short cylinders of
microtubules
Centrioles Function Act as anchors that
microtubules attach to during cell division to move chromosomes.
CILIA AND FLAGELLA
CILIA AND FLAGELLA
Structure:Flagella- Made of
microtubules. One or two long strand that extends from the cell Membrane
Cilia- Many short hairlike structures that extend from the cell membrane
Function Movement of the
cell
Aids in movement of fluids across the cell membrane