Cells Structure and Function cells overview Section 1: Introduction to the Cell.
CELLS - structure
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Transcript of CELLS - structure
THE BUILDING BLOCKS OF LIFE
ROBERT HOOKE - 1665
DISCOVERED CORK CELLS USING A
MAGNIFYING GLASS
CORK CELLS
- BY ROBERT HOOKE
LOUSE
- BY ROBERT HOOKE
LEEUWENHOEK - 1674
• INVENTED MICROSCOPE
• DISCOVERED BACTERIA
MICROSCOPE
ONION CELLS
CHEEK CELLS
DYEING TO SEE
• IODINE • SAFRANINE• METHYLENE BLUE• THERE WILL BE A GRADATION IN
COLOUR DUE TO THE DIFFERENCE IN THE CHEMICAL COMPOSITION OF THE VARIOUS PARTS OF THE CELL
ELECTRON MICROSCOPE
- 1940
MAGNIFYING 500,000 TIMES
Prokaryotic And Eukaryotic Cells
CELL WALL
THE SECRET OF RIGIDITY
CYTOPLASM
CYTOPLASM– A CLOSE UP
FRAMEWORK THAT
STRENGTHENS THE CELL
CYTO SKELETON
ENDOPLASMICRETICULUM
ENDOPLASMICRETICULUM
- A CLOSE UP
PLASTID
CHLOROPLAST
THE KITCHEN
CHLOROPHYLL
CHROMOPLASTS
MITOCHONDRIA
MITOCHONDRIA
THE POWER HOUSE OF THE
CELL
RIBOSOMES
GOLGI BODY
DICTYOSOMES
CENTROSOME
CENTRIOLES
CENTRIOLES
- THE SUICIDE BAGS
LYSOSOME
LYSOSOME ACTION
VACUOLES
VACUOLE
VACUOLES IN ANIMAL CELL
CELL INCLUSIONS - THE NON LIVING CONSTITUENTS
• WATER• MINERALS• SALTS• SUGAR• PROTEINS
NUCLEUS
NUCLEOLUS
RNA
RNA - 3D STRUCTURE
CHROMOSOMES
….IN COLOUR
CHROMOSOME - 3D STRUCTURE
DNA
DNA - 3D STRUCTURE
DNA - ANOTHER VIEW
FLAGELLA OR CILIA- FOR
LOCOMOTION
BACTERIALFLAGELLUM
CILIA
CILIA IN ACTION
No PLANT CELLS ANIMAL CELLS
1 Cell walls always present
No cell walls present outsidethe cell membrane
2 Plastids occur in cytoplasm
No plastids are found
3 Lysosomes not usually not
evident
Lysosomes occur in cytoplasm
4 Centrioles present only in cells of lower
plant forms
Centrioles always present
5 Large vacuoles filled with cell sap
Vacuoles, if present, aresmall or temporary
ACETABULARIA
BEHEMOTH AMONG PLANT
CELLS
ALGA GROWING TO A HEIGHT OF 10cm
BACILLUS BACTEREIA
0.1 - 0.5 MICRONS
RBC
CELLS WITHOUT NUCLEUS
SKIN CELLS
SPERM CELL
OVUM
DIATOM
AMOEBA
AMOEBA 3D VIEW
EUGLENA
EUGLENA STRUCTURE
FIBROBLASTS
HELPS IN WOUND HEALING
FIBROBLASTS IN MOUSE EMBRYO
SMOOTHMUSCLE CELLS
CELLS WITH MORE THAN ONE NUCLEUS
CARDIAC CELLS
CARDIAC CELLS STRUCTURE
PARAMECIUM
FAT CELLS
FAT CELLS3D VIEW
LIVER CELL
NEURON
NEURON3D VIEW
Cell
Division
MITOSIS
META PHASE A CLOSE UP
MEIOSIS
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