Download Chapter 1 Cells

Chapter 1
Cells
Section Reviews and
Chapter Review
1.3
1.) Use each of the following
terms in a separate sentence:
tissue, organ, function.



A tissue is a collection of similar cells that work
together to perform a specific job.
An organ is a collection of different tissues that
work together to perform a specific job.
The function of a part of an organism is what it
actually does (it’s job)
1.3
2.) What are the four levels of
organization in living things?
 A.
Cell, multicellular, organ, organ system
 B. Single cell, multicellular, tissue, organ
 C. Larger size, longer life, specialized cells,
organs
 D. Cell, tissue, organ, organ system,
organism
1.3
3.) MATH SKILLS: One multicellular organism
is a cube. Each of its sides is 3cm long. Each
of its cells is 1cm3. How many cells does it
have? If each side doubles it’s length, how
many cells does it have now?
 If
each side is 3 cm and one cell is 1 cm3,
then there are…

3 x 3 x 3 = 27 cells in the organism
 If
the cell size doubles to 6 cm and each
cell is still 1 cm3, then there are…

6 x 6 x 6 = 216 cells in the organism
1.3
4.) Applying Concepts: Explain the
relationship between structure and
function. Use alveoli as an example.
Be sure to include more than one level
of organization.
 The
structure of the alveoli as a web
of blood vessels surrounding an air
sac allows blood cells take in
oxygen and bring it into the lungs
(organ)
1.3
5.) Making Inferences: Why can multicellular
organisms be more complex than unicellular
organisms? Use the three advantages of
being multicellular in your answer.
 Multicellular
organisms can be more
complex because they can specialize
their cells. This means that they can
develop adaptations for defense.
 Being multicellular also means you can be
larger and less things can eat you!
 Finally, being multicellular means that you
have a longer life because you have
many cells. The loss of one cell kills a
unicellular organism after all!