Cells!
The Basic Unit of Life
Nerve Cells (Neurons)
Images used with permission of the Slice of Life project. http://faculty.washington.edu/chudler/ca1pyr.html
Nerve Cells
• What do nerve cells get or need from a
hamster?
food, oxygen, protection
• Why does a hamster need nerve cells?
To send and receive messages throughout the
body; coordinate the whole body
• How does this cell’s shape (or form) related to
its function (or job)?
It has extensions for receiving and sending
messages (nerve impulses)
Guard Cells
http://www.botany.hawaii.edu/faculty/webb/BOT410/anatweb/Epiderm/StomLilyNoGC400.jpg
Guard Cells
• What do guard cells get or need from a lily
plant?
Food, oxygen
• Why does a lily need guard cells?
to control the opening and closing of stomata
(holes in leaf); let CO2 & O2 in and out
• How does this cell’s shape (or form) related to
its function (or job)?
It can bend/move to open & close the holes