a cell is a cell but how can you tell?. robert hooke-1665 examined many living and non-living things...
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A cell is a cell but how can you tell?
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Robert Hooke-1665
• Examined many living and non-living things under the microscope.
• Living things seem to be made of “compartments”
• He called these compartments, cells
Cork is the outer bark of an evergreen oak
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Cells
• Are made up by organelles or parts that have specific jobs.
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More info on size of cells
• the Ostrich egg is the largest cell on Earth
• It is about the size of a football
• mycoplasma bacterium is the smallest cell in the world.
• It is only ten micrometers
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Cell Membrane• the thin layer
of protein and fat that
surrounds the cell.
Jello Model:
Plastic ziploc bag
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Cytoplasm• the jellylike
material outside the
cell nucleus in which the
organelles are located.
Jello Model:
gelatin
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Golgi Body
• a flattened, layered, sac-like organelle
that looks like a stack of pancakes
• packages proteins and carbohydrates
into vesicles for "export" from the
cell.
Jello Model:Folded hard ribbon candy
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Lysosomes• round organelles
surrounded by a membrane and
containing digestive
enzymes. • digestion of cell
nutrients takes place here
Jello Model”
M & M Candy
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Mitochondria• spherical to rod-shaped organelles
*the inner membrane is
infolded many times • Gives energy to the
cell
Jello Model:
raisins
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Nucleus• spherical body containing many
organelles• controls many of
the functions of the cell and
contains DNA (in chromosomes).
Jello Model:
A plum
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Ribosomes
• small organelles where proteins are made.
Jello Model:
Candy sprinkles
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Endoplasmic ReticulumIt functions as a packaging system.
It creates a network of membranes found through the whole cell
• Smooth
It acts as a storage
organelle. For example:
It is important
in the creation and
storage of steroids.
Jello Model:Gummy worms
• RoughThey are very important in
the synthesis and packaging
of proteins. Some of those
proteins might be used in
the cell and some are sent
out.
Jello Model:Sour gummy worms-rough
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Endoplasmic Reticulum
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Vacuoles
• Vacuoles are essentially enclosed compartments which are filled with water containing important stuff for the cell dissolved in it
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What do plant cells have that animal cells do not?”
• Cell Wall
• Chloroplasts
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Plant Cells
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Cell Wall-only in plants
• A rigid structure that protects the plant
• Provides structure and shape
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Chloroplasts
• Capture sun light and chemically change it to sugar.
• Chloroplasts are the food producers of the cell.
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Organelles of a Animal CellCell membrane
NucleusRibosomesCytoplasm
MitochondriaEndoplasmic Reticulum
Golgi Apparatus or bodiesVacuole
CytoplasmLysosome
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Organelles of a Plant CellCell Wall
Cell membraneNucleus
RibosomesChloroplastCytoplasm
MitochondriaEndoplasmic Reticulum
Golgi Apparatus or bodiesVacuole
Cytoplasm