1. Tour of the Cell 3

2. Cells gotta work to live!
What jobs do cells have to do?
Build proteins
proteins control every cell function
Utilize energy
for daily life
for growth
Make new cells
growth
repair
renewal
Maintain Homeostasis
Digestion/Waste Removal

3. Making New Cells

4. Cells need to make more cells!
Making more cells
to replace, repair & grow, the cell must…
copy their DNA
make extra organelles
divide the new DNA & new organelles between 2 new “daughter” cells
organelles that do this work…
nucleus
centrioles
cytoskeleton

5. Centrioles Function Structure Help coordinate cell division
in animal cells, pair of centrioles organize microtubules
spindle fibers
guide chromosomes in mitosis
Structure
One pair in each cell

6. Cytoskeleton Function structural support motility regulation
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

7. Cytoskeleton
actin
microtubule
nuclei