the cell chapter 1 history • invention of the microscope • hans and zacharias janssen - 1590 • galileo galilei - 1609 • giovanni faber • robert hooke -1665 - Micrographia • anton van leewenhoek - 1676 • schleiden & schwann cell theory • three basic tenets • all organisms are composed of cells • cell is the structural unit of life • cells only arise from division of other cells • cells can be cultured • HeLa cells Torsten Wittmann / Photo Researchers, Inc. basic properties of cells • complex but organized • cells from different species share characteristics • each type of cell exhibits structural consistency • cells are structurally conserved • possess genetic information • can produce proteins • can copy themselves • acquire and utilize energy MI Walker / Photo Researchers, Inc.
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the cellchapter 1
history• invention of the microscope
• hans and zacharias janssen - 1590• galileo galilei - 1609
• giovanni faber• robert hooke -1665 - Micrographia• anton van leewenhoek - 1676• schleiden & schwann
cell theory• three basic tenets
• all organisms are composed of cells• cell is the structural unit of life• cells only arise from division of other cells
• cells can be cultured• HeLa cells
Tors
ten
Witt
man
n / P
hoto
Res
earc
hers
, Inc
.
basic properties of cells• complex but organized
• cells from different species share characteristics• each type of cell exhibits structural consistency• cells are structurally conserved
• possess genetic information• can produce proteins
• can copy themselves• acquire and utilize energy
MI W
alke
r / P
hoto
Res
earc
hers
, Inc
.
basic properties of cells• carry out chemical reactions
• metabolism• have mechanical activity
• “motor” proteins• can respond to stimuli• robustness• cells evolve