Transcript CELL WALL

PLANT AND ANIMAL
CELLS
Sit Down Quietly
• Backpacks by your feet.
• Get out your comp notebook,
pencil, scissors and glue stick.
• Wait until I give you
permission to take your
backpack to the lab table.
Early Scientists’ Contributions:
Record notes on pages 2 and 3
Anton van Leeuwenhoek
• First
compound
light
microscope
Robert Hooke
• Coined the
term “cell”
Matthias Schlieden
• All plants are
made of cells
Theodor Schwann
• All animals are
made of cells
Rudolf Virchow
• Cells can only
arise from
pre-existing
cells
Cell Theory: Record on page 4
1. All organisms are
made up of one or
more cells.
2. The cell is the
basic unit of
organization of all
organisms.
3. All cells come
from other cells
all ready in
existence.
Building Blocks of Life from
Large to Small: Record on page 5
1.
2.
3.
4.
5.
6.
Biosphere
Ecosystem
Community
Population
Individual
Organs
7. Tissues
8. Cells
9. Molecules
10. Atoms
11. Quarks
Cell Functions: complete the
worksheet in comp notebook.
CELL WALL:
PLANT
• Function:
Gives the cell most
of its support and
structure
• A thick, rigid
membrane that
surrounds a plant
cell
• Bonds with other
cell walls to form
the structure of
the plant
Analogy: Like a
brick wall
CELL MEMBRANE
•
•
Analogy: Like a
gate
Function:
Semi permeable,
allowing some
substances to pass
into the cell and
blocking others.
Thin layer of
protein and fat that
surrounds the cell
Chloroplast
• Function:
Where
photosynthesis
takes place
• An elongated or
disc-shaped
organelle
containing
chlorophyll
Analogy: I am sweet
like a mint
gumdrop.
• Function:
Where the organelles
are located.
• Analogy: Like cherry
Jello.
Cytoplasm
ENDOPLASMIC RETICULUM
• Function:
transports materials
through the cell
• Rough ER is
covered with
ribosome's that
give it a rough
appearance
Analogy: Like a
train.
Golgi Bodies
• Function:
Golgi bodies are the
packaging and
secreting organelles
of the cell.
• Are stacks of
membrane-covered
sacs that package
and move proteins
to the outside of the
cell.
Analogy: Like
Amazon
Lysosome
• Function:
Where the digestion of
cell nutrients takes
place
• Also called cell
vesicles
• Spherical organelles
surrounded by a
membrane
• They contain
digestive enzymes
Analogy: Like a
garbage disposal
Mitochondria
•
•
•
Functions:
Powerhouse of the
cell. Where
energy of the cell
is released.
Spherical to
rod-shaped
organelles with
a double
membrane
Membrane is
infolded many
times, forming a
series of
projections
(called cristae)
Analogy: Like
a battery
Nucleus:
The Manager
• Function:
Controls many of
the functions of the
cell
• Spherical body
containing many
organelles,
including the
nucleolus
• Contains DNA (in
chromosomes)
• Surrounded by
the nuclear
membrane
Analogy: Like a
boss or CEO
Ribosome's
• Function:
Small structures in
the cytoplasm that
create proteins.
• Ribosome's are
either free floating
in the cytoplasm of
a cell or attached
to endoplasmic
reticulum in a cell.
• Analogy: Like BBQ
ribs
Vacuole
•
Function: a vacuole
is a temporary
storage space for
the cell
•
Fluid-filled,
membranesurrounded
cavities inside a
cell
Fills with food
being digested
and waste
material that is on
its way out of the
cell
•
Analogy: Like a
suitcase
Plant Cell
Cross Section: Animal Cell
Edible Plant and Animal Cells
More Edible Cells
Material Suggestions
• pieces each of round and square bread (cell)
• honey (cytoplasm)
• Marshmallows (vacuoles) – 1 large white for
plant, 5 small yellow for animal
• Straight Pretzels (cell wall)
• Wrapped Hard Candies (nucleus)
• jelly beans (mitochondria)
• green Marshmallows (chloroplasts)
• Twizzlers (Endoplasmic Reticulum)
• Smarties (Golgi Bodies)
• Gum Drops (Lysosomes)
• jar of Sprinkles (Ribosomes)
• aluminum foil (cell membrane)