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1.3 Cell Differences
Cell Development
• All cells start their lives as identical cells
called stem cells.
Stem Cells
• Each stem cell has
the potential to
become a
specialized cell as it
• Some will become
blood cells, some
nerve cells, and
some muscle cells.
Cell Specialization
• Different types of cells
have different
structures and
abilities that enable
them to perform their
functions efficiently.
A nerve cell
Cell Differentiation
• Cell Differentiation: This is the series of
events through which stem cells develop
into specialized cells.
• Scientists are very interested in studying
how stem cells differentiate.
• They might be used to replace or repair
damaged tissues in humans.
Specialized Cells
• Each different kind of cell has different
structures that allow them to perform a
unique function.
• There are 200 different types of cells in the
human body.
• We will be looking at only five of these in
more detail.
1. Muscle Cells
2. Nerve Cells
3. Red Blood Cells
4. Bone Cells
5. Skin Cells
• Read textbook pg. 40 – 43
• Complete table on “1.3 Cell Differences”
• Answer the following and hand in:
– pg. 41 # 1, 2
– pg. 43 #1 - 3