PEOPLE WHO MADE DISCOVERIES ABOUT SEEING CELLS & CELL COMPONENTS

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Presentation transcript:

PEOPLE WHO MADE DISCOVERIES ABOUT SEEING CELLS & CELL COMPONENTS CELL THEORY PEOPLE WHO MADE DISCOVERIES ABOUT SEEING CELLS & CELL COMPONENTS

ANTON VAN LEEUWENHOEK INVENTED THE HAND-HELD MICROSCOPE

ROBERT HOOKE CAME UP WITH THE TERM “CELLS” HE LOOKED AT CORK UNDER A MICROSCOPE AND SAW CHAMBERS, LIKE IN A MONASTARY ARE THESE PLANT OR ANIMAL CELLS?

ROBERT BROWN NOTICED THAT CELLS HAVE A DARK CENTER Think of Tootsie Pops! WHAT WAS THIS? THE NUCLEUS!

MATTHIAS SCHLEIDEN BOTANIST, PLANTS ARE AGGREGATES OF INDEPENDENT, SEPARATE BEINGS. (cells) THEY ARE MADE OF CELLS!

THEODORE SCHWANN ANIMALS ARE MADE FROM CELLS! NO KIDDING!

RUDOLF VIRCHOW ANIMALS COME FROM ANIMALS PLANTS COME FROM PLANTS ALL CELLS ARISE FROM CELLS

SCHLEIDEN, SCHWANN & VIRCHOW THEY ALL CONTRIBUTED TO WHAT WE CALL “CELL THEORY” A. ALL LIVING THINGS ARE MADE OF ____ B. _______ ARE THE BASIC UNIT OF STRUCTURE/FUNCTION IN ORGANISMS C. _____ COME FROM PRE-EXISTING ______

CELL STRUCTURE 4 MAIN COMPONENTS 1. CELL MEMBRANE 2. NUCLEUS-Eukaryote PLANTS-ALSO HAVE A CELL WALL 2. NUCLEUS-Eukaryote 3. CYTOPLASM- interior gel-like texture 4. CYTOSKELETON-rigid exterior

ORGANELLES OF ANIMAL CELLS http://bcs. whfreeman

ORGANELLES OF PLANT CELLS

NUCLEUS nucleus magnified

CELL CYTOPLASM Where Organelles are in the cell

CELL MEMBRANE PHOSPHOLIPID STRUCTURE http://www. susanahalpine LOVES WATER! ♥ AVOIDS WATER!

CELL MEMBRANE

Cytoskeleton Exterior layer

3 Types of cytoskeletal structure Microtubules example centrioles help with moving chromosomes & organelles Actin filament/aka microfilaments help with cell’s motion, Ex. Muscle cell movement can slide. Intermediate filaments cells rigid shape

Cell Surface Area to Volume Ratio Sizes of various cells http://www.cellsalive.com/howbig.html Surface area to volume ratio is key As cell volume increases, cell surface area can not keep up. Therefore, there is a limit to cell size.

Cell Surface to Volume Ratio

Levels of Organization in Organisms Organ System Organ-Organized tissues Tissue- Layers of cells that perform a function Cell DNA Atoms

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