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Section 7.1 – Life is Cellular
Biology
Name
Date:
Period:
Lesson Objectives
 State the cell theory.
 Describe how the different types of microscope work.
 Distinguish between prokaryotes and eukaryotes.
Fill in the chart with the missing vocab term or the definition.
Term
Definition
Basic unit of life
Thin flexible barrier that separates the cell from its environment
All living things are made of one or more cells; cells are the basic units of
structure and function; and new cells come from previously existing cells.
Cell with DNA that is enclosed in a nucleus
Cell structure that contains genetic material
Cell with DNA not enclosed in a nucleus
1. The invention of the
made the discovery of cells possible.
2. Robert Hooke used the name
to refer to the tiny empty chambers he saw when he
observed magnified cork.
3. German botanist Matthias Schleiden concluded that
are made of cells.
4. German biologist Theodor Schwann concluded that
are made of cells.
5. Rudolph Virchow concluded that new cells are produced from
6. The
.
combines the conclusions made by Schleiden, Schwann, and Virchow.
Matching: Match the important contribution that each of the following scientists made to the cell theory.
______ 1.
Developed 1st microscope
A. Anton van Leeuwenhoek
______ 2.
Looked at plant stems, wood and cork; discovered cells
B. Mathias Schleiden
______ 3.
Discovered the nucleus
C. Robert Brown
______ 4.
Stated that plants are made up of cells
D. Robert Hooke
______ 5.
Stated that animals are made up of cells
E. Rudolf Virchow
______ 6.
Stated that all cells arise from the division of
F. Theodor Schwann
preexisting cells
List the three parts of the Cell Theory:
1.
2.
3.
Prokaryotes and Eukaryotes
Eukaryotes
DNA
their
are cells that
do not
enclose
are cells that
their
in
in
nuclei.
Two Categories of Cells
Category
Definition
Size range
Examples
Prokaryotic cells
Eukaryotic cells
Label the prokaryotic cell and the eukaryotic cell.
Compare and contrast the two types of cells by completing the table.
Prokaryotic Cell
Cell membrane
Eukaryotic Cell
yes
Nucleus
Cell size
Complexity
Your body is made up of
simpler
cells. Bacteria are
cells.