Transcript 7. Plant Cell as a Restaurant PowerPoint plant_cell

The Incredible, Edible
Plant Cell
Structures and functions of the plant
cell
Plants
 All plants are made of cells, just like your
body is made of animal cells.
Plant Cells
 Today, we will explore
the plant cell.
 Plant cells have a wide
range of components
that perform different
activities.
 We will relate the cell
to a restaurant to learn
more about the
different components’
roles.
Cell Wall
 The outermost
structure is the cell
wall.
 The cell wall provides
structure and strength
to the cell.
 The cell wall acts
like the brick wall
of a restaurant.
Cell Membrane
 You can locate the cell
membrane just inside the
cell wall.
 The cell membrane
provides strength to the
cell and decides what
molecules can enter or exit
the cell.
 The cell membrane is like
a maitre de or traffic cop
of the restaurant.
Nucleus
 The nucleus is the control
center of the cell.
 The nucleus contains the
cell’s genetic information
and the machinery for
making proteins.
 Think of the
nucleus as the
boss’s office of the
restaurant.
 The nucleus is label with
an ‘n’ in this picture.
Ribosomes
 Ribosomes make proteins
for the cell.
 Ribosomes do most of
their work in the
endoplasmic reticulum.
 Think of ribosome as the
cooks of the restaurant.
They make the products or
meals for the restaurant.
 The ribosome are the
black dots on the
endoplasmic reticulum.
Endoplasmic Reticulum
 The endoplasmic
reticulum (ER) is where
proteins are folded into
shape.
 It is a series of
interconnected vesicles
connected to the nucleus.
 Think of the ER as
the kitchen where
the cooks work.
Lysosome
 Lysosome function in
intracellular and
extracellular digestion.
 Lysosome break down
food brought into the
cell.
 Lysosome also recycle
worn out cell parts. It
puts some in the trash
and recycles the parts
it can use later.
Think of the
lysosome as the bus
boy or janitor. He
will take the plates
back to the kitchen
and throw the trash
into the trash bin.
Vacuole
 The vacuole is often the largest
structure in the cell (it is blue in this
picture).
 It stores water and provides pressure
that keeps the cell from collapsing.
 Vacuoles help get rid of the cell’s
insoluble waste.
 When the vacuole runs out of water,
the cell shrinks or wilts. This is why
plants wilt without enough water.
 Imagine the vacuole as the
storage room. It holds all the
extra ingredients and the
trash cans.
Chloroplast
 Chloroplasts convert light
energy into chemical
energy in a process called
photosynthesis.
 Imagine chloroplast
as the guy who
delivers food to the
restaurant. Without
the chloroplast, the
cell would have no
energy to live.
Mitochondria
 Mitochondria are the
powerhouses of the cell.
 Mitochondria generate
energy by aerobic
respiration.
 Mitochondria can be
thought of as the food
in the restaurant. They
are also like the
electricity.
Here is a
picture of
onion cells.
You can see
the cell
wall, cell
membrane
and the
nucleus.
 This is an actual
picture of a
plant cell.
 It has been
labeled to help
you identify the
different
structures.
 Take a
look at this
cell.
 Identify
the parts
that you
recognize
in your
notebook.