KEY CONCEPT Cells are the Basic unit of life. - PowerPoint PPT Presentation

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KEY CONCEPT Cells are the Basic unit of life.

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Title: Chapter 3, Section 1 Author: McDougal Littell Last modified by: Nancy D. Dow Created Date: 3/30/2006 8:01:43 PM Document presentation format – PowerPoint PPT presentation

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Title: KEY CONCEPT Cells are the Basic unit of life.


1
  • KEY CONCEPT Cells are the Basic unit of life.

2
  • FL NGSSS
  • SC.912.L.14.1 Describe the scientific theory of
    cells (cell theory) and relate the history of its
    discovery to the process of science. (MODERATE)
  • SC.912.L.14.3 Compare and contrast the general
    structures of prokaryotic and eukaryotic cells.

3
  • Many scientists contributed to the cell theory.
  • 1665- Hooke was the first to identify cells, and
    he named them.
  • 1674- Because he made better lenses, Leeuwenhoek
    observed cells in greater detail
  • 1838- Schleiden was the first to note that plants
    are made of cells
  • 1839- Schwann concluded that all living things
    are made of cells
  • 1855- Virchow- proposed that all cells come from
    other cells

4
  • 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.

5
  • 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.
  • The cell theory is a unifying
    concept of biology.

6
  • Early studies led to the development of the cell
    theory.
  • The Cell theory has three principles.
  • All organisms are made of cells.

7
  • Early studies led to the development of the cell
    theory.
  • The Cell theory has three principles.
  • All organisms are made of cells.
  • All existing cells are produced by other living
    cells.

8
  • Early studies led to the development of the cell
    theory.
  • The Cell theory has three principles.
  • All organisms are made of cells.
  • All existing cells are produced by other living
    cells.
  • The cell is the most basic unit of life.

9
  • Prokaryotic cells lack a nucleus and most
    internal structures of eukaryotic cells.
  • All cells share certain characteristics.

10
  • Prokaryotic cells lack a nucleus and most
    internal structures of eukaryotic cells.
  • All cells share certain characteristics.
  • Cells tend to be microscopic.

11
  • Prokaryotic cells lack a nucleus and most
    internal structures of eukaryotic cells.
  • All cells share certain characteristics.
  • Cells tend to be microscopic.
  • All cells are enclosed
    by a membrane.

12
  • Prokaryotic cells lack a nucleus and most
    internal structures of eukaryotic cells.
  • All cells share certain characteristics.
  • Cells tend to be microscopic.
  • All cells are enclosed
    by a membrane.
  • All cells are filled with
    cytoplasm.

13
  • There are two cell types eukaryotic cells and
    prokaryotic cells.

14
  • There are two cell types eukaryotic cells and
    prokaryotic cells.
  • Eukaryotic cells have a
    nucleus.

15
  • There are two cell types eukaryotic cells and
    prokaryotic cells.
  • Eukaryotic cells have a
    nucleus.
  • Prokaryotic cells do
    not have membrane-

    bound organelles.

16
  • There are two cell types eukaryotic cells and
    prokaryotic cells.
  • Prokaryotic cells do not
    have a nucleus.

17
  • There are two cell types eukaryotic cells and
    prokaryotic cells.
  • Prokaryotic cells do not
    have a nucleus.
  • Prokaryotic cells do not
    have membrane-bound

    organelles.
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