Chapter 7 Section 1 Discovery of Cells The

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Chapter 7 Section 1 Discovery of Cells

Chapter 7 Section 1 Discovery of Cells

The Cell Theory • The Cell Theory states that all organisms are composed of

The Cell Theory • The Cell Theory states that all organisms are composed of similar units of organization called cells.

Before the Cell Theory people believed in spontaneous generation which means living things come

Before the Cell Theory people believed in spontaneous generation which means living things come from non living thing Two scientist disproved spontaneous generation.

Francisco Redi proved that macroorganisms do not spontaneously generate People thought that maggots came

Francisco Redi proved that macroorganisms do not spontaneously generate People thought that maggots came from meat. • Redi disproved this in a controlled experiment

Pasture proved that microoganisms do not spontaneously generate

Pasture proved that microoganisms do not spontaneously generate

Pasture

Pasture

Development of Cell Theory • Theodor Schwann and Matthias Schleiden are credited with coming

Development of Cell Theory • Theodor Schwann and Matthias Schleiden are credited with coming up with the Cell Theory

Schwann • Animal Cells

Schwann • Animal Cells

Schleiden • Plant Cells

Schleiden • Plant Cells

The Cell Theory 1. All known living things are made up of cells. 2.

The Cell Theory 1. All known living things are made up of cells. 2. The cell is structural & functional unit of all living things. . 3. All cells come from pre-existing cells by division. (No spontaneous generation ).

Microscopes • The Cell Theory would not exist if it wasn’t for the development

Microscopes • The Cell Theory would not exist if it wasn’t for the development of the microscope and the work of others.

Janssen • Invented the first compound microscope

Janssen • Invented the first compound microscope

Robert Hooke • In 1663 an English scientist, Robert Hook improved Janssen’s invention.

Robert Hooke • In 1663 an English scientist, Robert Hook improved Janssen’s invention.

Hooke • Hooke observed cork – the remains of dead tree bark • Coined

Hooke • Hooke observed cork – the remains of dead tree bark • Coined the word CELL • Derived from the Latin 'cellula' which means small compartment.

Van Leeuwenhoek • Ten years later Anton van Leeuwenhoek used his own single lens

Van Leeuwenhoek • Ten years later Anton van Leeuwenhoek used his own single lens microscopes and was the first person to observe bacteria and protozoa.

Leeuwenhoek’s Microscope • Leeuwenhoek microscopes resemble high power magnifying lenses.

Leeuwenhoek’s Microscope • Leeuwenhoek microscopes resemble high power magnifying lenses.

Compound Light Microscope • Ocular lens times objective lens give total magnification

Compound Light Microscope • Ocular lens times objective lens give total magnification

Two Basic Cell Types • Prokaryotic Cells • Eukaryotic Cells Mainly single Mainly celled

Two Basic Cell Types • Prokaryotic Cells • Eukaryotic Cells Mainly single Mainly celled organisms multicellular organisms, although some are single celled (amoeba, algae, yeast)

Prokaryotic Cell • Prokaryotes have no membrane bound organelles. • Example – bacteria cell

Prokaryotic Cell • Prokaryotes have no membrane bound organelles. • Example – bacteria cell

Eukaryotic Cells • Eukaryotes – contain membrane bound organelles • Example – plant and

Eukaryotic Cells • Eukaryotes – contain membrane bound organelles • Example – plant and animal cells

Organelles • An organelle is a small specialized structure inside of a cell. •

Organelles • An organelle is a small specialized structure inside of a cell. • An example of an organelle is the nucleus which controls cell functions.

CELLS Discovery Cells Bill Nye Cells BASIC STRUCTURECELLS Discovery Cells Bill Nye Cells BASIC STRUCTURE
CELLS DISCOVERY OF CELLS Cells were initially discoveredCELLS DISCOVERY OF CELLS Cells were initially discovered
Cells Plant Animal Cells What are cells CellsCells Plant Animal Cells What are cells Cells
Cells Animal cells Plant cells Specialised cells OrganisationCells Animal cells Plant cells Specialised cells Organisation
Cells Animal cells Plant cells Specialised cells OrganisationCells Animal cells Plant cells Specialised cells Organisation
Discovery Service Discovery servicePreindexed metadata Discovery ServiceFederated searchDiscoveryDiscovery Service Discovery servicePreindexed metadata Discovery ServiceFederated searchDiscovery
Discovery Groups Discovery Groups Leading a Discovery GroupDiscovery Groups Discovery Groups Leading a Discovery Group
Makeup Discovery Discovery scope of discovery Old versionMakeup Discovery Discovery scope of discovery Old version
Cells Chapter 3 Cells Cells are the basicCells Chapter 3 Cells Cells are the basic
Chapter 1 1 2 Cells Cells cells andChapter 1 1 2 Cells Cells cells and
Cells Section 1 An Introduction to Cells SectionCells Section 1 An Introduction to Cells Section
Discovery of Cells First to View Cells InDiscovery of Cells First to View Cells In
Introduction to Cells Discovery of Cells The CellIntroduction to Cells Discovery of Cells The Cell
Discovery of Cells Cells smallest unit of matterDiscovery of Cells Cells smallest unit of matter
Eukaryotic Cells Discovery of the Cell Cells wereEukaryotic Cells Discovery of the Cell Cells were
Eukaryotic Cells Discovery of the Cell Cells wereEukaryotic Cells Discovery of the Cell Cells were
Cells Unit 3 The Discovery of Cells MicroscopesCells Unit 3 The Discovery of Cells Microscopes
Anatomy of Cells The Discovery of Cells DONTAnatomy of Cells The Discovery of Cells DONT
Lesson 6 Characteristics of Cells Discovery of CellsLesson 6 Characteristics of Cells Discovery of Cells
Cells Discovery of Cells l 1665 Robert HookeCells Discovery of Cells l 1665 Robert Hooke