SNC 2P
Unit: Tissues, Organs, Systems
Name: ____________________
Date: ____________________
Cells Working Together – Specialized Cells in the Human Body (pages 38 – 43)
1.
Why do multi-cellular organisms like us need to have specialized cells? _______________________
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2.
Why do different specialized cells have different structures? ________________________________
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3.
What is cell differentiation? __________________________________________________________
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4.
What is cell specialization? ___________________________________________________________
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Refer to Table 1.2 page 43 in the textbook and/or the powerpoint notes to answer each of the
following questions.
a) How are neurons specialized to carry out their function? ________________________________
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5.
b) Why do muscle cells contain so many mitochondria? ___________________________________
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c) How are skin cells specialized to carry out their function? ________________________________
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6.
Would a fish have all of the same specialized cells as a bird? ______ Explain your thinking. _______
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7.
Match the letter of each definition to the correct term.
Terms
Definitions
__ muscle cells
a) The process stem cells go through in order to form specialized cells.
__ neurons (nerve cells)
b) Unspecialized cells with the potential to become specialized.
__ cell specialization
c) Cells with a depression in the centre to increase the surface area for
__ stem cells
carrying oxygen around the body.
__ cell differentiation
d) Cells that form a mineral containing framework to provide strength
__ red blood cells
and support for the body.
__ bone cells
e) Cells with long, threadlike branches that allow them to transmit
signals throughout the body.
f) Different types of cells have different structures and abilities so that
they can perform different functions efficiently.
g) Long, thin, branching cells that can change size when they contract.
8.
Write out the organizational hierarchy for humans on the lines below.
__________________  _____________________  ______________  ____________  ______________