Transcript Cell Theory: Classic vs. Modern

*
Standard: S7L2. Students will describe
the structure and function of cells,
tissues, organs, and organ systems.
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How do cells contribute to an
explanation about the basic
processes of life…life, death,
reproduction, etc?
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* Prokaryotic Cells
* Eukaryotic Cells
*Eukaryotic Cells
*Animals, plants,
fungi, and protists
are eukaryotes
*Eukaryotes are
organisms whose
cells are organized
into complex
organelles.
*
*
* Cells without membrane-bound structures.
* Hereditary material is free to move throughout the cell. No
nucleus.
* Only found in one-celled organisms
* Ex) Bacteria
*Prokaryotic Cells
*Bacteria and archaea
are the only
Prokaryotes in the
world
*Prokaryotes are
unicellular organisms
that lack a nucleus
and most organelles.
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ANIMAL CELLS
and
PLANT CELLS
are ___________________________ .
a) Prokaryote Cells
b) Eukaryote Cells
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Write down at least 4 similarities and
differences between prokaryote cells and
eukaryote cells.
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Hook
Leewenhoek
Schleiden
Schwann
Hooke- the 1st to identify and name cells
Leewenhoek- made better lenses so was able to see cells
in greater detail
Schleiden-found that plants are made of cells
Schwann- concluded that all living things are made of cells
Virchow- proposed that all cells come from other cells
Virchow
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1.
2.
All organisms are made of 1 or more cells.
3.
All cells come from other cells (added 20
years later by Virchow).
The cell is the basic unit of life in all living
things.
I believe in cells!
*
*The cell is the
fundamental unit of
structure and function in
living things.
*All cells come from pre-
exsisting cells by division
*Energy flow (metabolism
and biochemistry)
*Cells contain genetic info
in form of DNA
*All cells are the same
chemically
*All known living things
are made of cells
*There are multicellular
and unicellular cells.
*The activity of an
organism depends on the
total activity of
independent cells.