Biology Chapter 3.1 Cell Theory Powerpoint Essay

643 Words May 13th, 2013 3 Pages
3.1 Cell Theory
KEY CONCEPT Cells are the Basic unit of life.

3.1 Cell Theory 3.1 Objectives

Describe developments that led to the cell theory.

Differentiate between eukaryotic and prokaryotic cells.

3.1 Cell Theory
The cell theory grew out of the work of many scientists and improvements in the microscope. • Many scientists contributed to the cell theory.

3.1 Cell Theory
The cell theory grew out of the work of many scientists and improvements in the microscope. • Many scientists contributed to the cell theory. • More was learned about cells as microscopes improved.

3.1 Cell Theory
The cell theory grew out of the work of many scientists and improvements in the microscope. • Many scientists contributed to the cell
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• All cells share certain characteristics. – Cells tend to be microscopic. – All cells are enclosed cell membrane by a membrane. – All cells are filled with cytoplasm.

cytoplasm
Bacterium (colored SEM; magnification 8800x)

3.1 Cell Theory
There are two cell types: eukaryotic cells and prokaryotic cells.

3.1 Cell Theory
There are two cell types: eukaryotic cells and prokaryotic cells. • Eukaryotic cells have a nucleus. nucleus cell membrane

3.1 Cell Theory
There are two cell types: eukaryotic cells and prokaryotic cells. • Eukaryotic cells have a nucleus. nucleus • Prokaryotic cells do not have membranebound organelles. organelles cell membrane

3.1 Cell Theory
There are two cell types: eukaryotic cells and prokaryotic cells. • Prokaryotic cells do not have a nucleus. nucleus organelles

cell membrane

3.1 Cell Theory
There are two cell types: eukaryotic cells and prokaryotic cells. • Prokaryotic cells do not have a nucleus. nucleus • Prokaryotic cells do not have membrane-bound organelles. organelles cell membrane

cytoplasm

3.1 Cell Theory 3.1 Assessment: How did improvements in the microscope help scientists form the cell theory?
Improvements allowed scientists to see cells in greater and greater detail and enabled them to discover cells in types of living matter.

3.1 Cell Theory

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