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Tour of the Cell 3
AP Biology
2007-2008
Cells gotta work to live!
 What jobs do cells have to do?

make proteins
 proteins control every
cell function

make energy
 for daily life
 for growth

make more cells
 growth
 repair
 renewal
AP Biology
Making New Cells
AP Biology
2007-2008
Cytoskeleton
 Function

structural support
 maintains shape of cell
 provides anchorage for organelles
 protein fibers


microfilaments, intermediate filaments, microtubules
motility
 cell locomotion
 cilia, flagella, etc.

regulation
 organizes structures
& activities of cell
AP Biology
Cytoskeleton
 actin
 microtubule
 nuclei
AP Biology
Centrioles
 Cell division

in animal cells, pair of centrioles
organize microtubules
 spindle fibers

AP Biology
guide chromosomes in mitosis
Any Questions??
AP Biology
2007-2008