Campbell’s Biology in Focus, Chapter 4, A tour of the cell
Modified Stanford notes
Page 66—93
P 66
Overview
The fundamental units of life
1 -2 Life hierarchy—cells (smallest
collection matter with characters of
life, basic unit organization all
organisms structure & function)
tissuesorgans… see page 2,3
My recall—characters of life include
Contains DNA,
reproduces by cell division,
has metabolism,
maintains homestasis,
made of cells,
responds,
grows & develops
as a population evolves
3 evolution has formed many kinds of
organisms but all are made of cells sharing
common characters
Concept 4.1
Overview section review
Not included, but implied
Cell theory (see chapter 7, general biology text,
miller and Levine)
1 All organisms made of cells
light microscope inventor Hooke saw cork cells—
small rooms—In microscope,
 then Leewenhoek saw protists with
improved light microscope,
 then Schleiden saw many plant cells &
Schwann saw many animal cells)
2 Cells are basic units of structure & function of
all organisms—smallest units with all
characters of life (e.g., bacterial cells are alive)
3 Cells arise only from division of other cells
 Seen by Virchow
This book—
Cells make organisms, even those made very
different via evolution