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CHAPTER
4
Cells: The
Basic Units
of Life
KEY QUESTION: What do
all living things have in
common?
Looking Ahead
Living things have several characteristics
that distinguish them from non-living things.
All living things are made up of one or
more cells.
The compound microscope is an instrument
used to see cells and can help us learn more
about the structure and function of cells.
Microscopes and the skills of scientific
inquiry can be used to learn more about the
structure of cells.
Plant and animal cells have many
similarities, but they also have distinctive
differences.
Advances in microscope technology have
allowed us to look more closely at cells.
VOCABULARY
cell
chromosomes
cell theory
vacuole
magnification
cell wall
field of view
chloroplast
organelle
flagella
cytoplasm
cilia
cell membrane
electron microscope
nucleus
92 Chapter 4 • Cells: The Basic Units of Life
Sci8_UnitB_Chap4.indd 92
NEL
10/17/08 12:07:40 PM
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