1. Cell Specialization

2. Learning goals
We are learning the difference between cell specialization and cell differentiation.
We are learning the structure and function of various specialized cells.

3. The Process
Cell theory states that all cells come from previously existing cells
All cells in an organism contain the same DNA but are not all alike.
Cells develop in different ways to perform particular functions in a process called cell specialization.

4. Red blood cells Contain hemoglobin that carries oxygen in blood
Are smooth so that they can easily pass through the blood

5. White blood cells
Can move like an amoeba to engulf bacteria and fight infection

6. Skin cells Fit together tightly to cover the outside of the body
Protect the cells inside and reduce water loss

7. Bone cells Collect calcium from food
Allow the growth and repair of bones

8. Muscle cells Are arranged in bundles called muscle fibres
Can contract which makes the fibres shorter and causes bones to move

9. Fat cells Have a large vacuole in which to store fat molecules
How cells store chemical energy

10. Nerve cells Are long, thin and have many branches
Conduct electrical impulses to coordinate body activity

11. Homework
Lab
View a muscle cell, blood cell, epithelial and bone cell
Make biological drawing of each
Identify features of cell that aid with what it is specialized for
P60 #1-6
P76 # 1-6

12. Learning goals
We are learning the difference between cell specialization and cell differentiation.
We are learning the structure and function of various specialized cells.