Download Plant Cells - Glow Blogs

Ardrossan Academy
Dead Earth
Subtopic – Plant Cells
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Lesson Title: Plant Cells
Learning Intention:.
State the parts of a plant cell and
their functions
Activity:
I will be successful if I can :
Label a diagram of a plant cell
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• Rationale:
• We will require plants/crops to survive
on our new planet.
•
What structures are present in a
plant cell and how do they contribute
to its function?
•
What will conditions for
photosynthesis be like?
• Can we take agricultural chemicals with
us? What will be their impact on our
food supply?
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Looking at Cells
• Cells are the ‘building blocks’ of
life.
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• Cell Size and Scale
• http://learn.genetics.utah.edu/c
ontent/begin/cells/scale/
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Nucleus
vacuole
cytoplasm
Cell
membrane
Cell wall
chloroplast
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Animal Cells
Cell Membrane
Cytoplasm
Nucleus
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Plant cell structures
Cell wall
Cell membrane
Cytoplasm
vacuole
Nucleus
Chloroplast
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Summary
Animal Cells
Plant Cells
nucleus
nucleus
cytoplasm
cytoplasm
cell membrane
cell membrane
cell wall
vacuole
chloroplasts
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Function of components
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The Nucleus
• Controls the cell’s
activities
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The Cytoplasm
• It is a jelly like
material
•All the chemical
reactions happen
here
cytoplasm
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The Cell Membrane
•The cell membrane
controls which
substances may enter
and leave the cell.
• Oxygen and food
move into the cell.
• Carbon dioxide moves
and other wastes
move out of the cell.
Cell membrane
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Plant Cells
• Plants, as you
know, don't have a
skeleton to form a
rigid framework
and so they need
some other means
of structural
support.
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The Cell Wall
• This is an extra,
strong, rigid
structure on the
outside of the
membrane
• It contains holes so it is
permeable
Gives the plant a
definite shape +
support
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The Vacuole
• The vacuole
contains cell sap ( a
solution of sugars
and salts).
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Chloroplasts
•Trap light for
photosynthesis.
• Chloroplasts contain
a green pigment
called chlorophyll.
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Elodea Leaf
Cell
wall
Vacuole
Chloroplasts
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Cell membrane –
controls the
movement of
substances into
and out of the cell
Cytoplasm – most
chemical processes
take place here,
Nucleus
– contains
genetic
controlled
by
material,
which controls the
enzymes
activities of the cell
2.
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Vacuole – filled
with cell sap to
help keep cell
turgid (enlarged
and swollen
Chloroplasts –
with fluid)
contain
chlorophyll
which absorbs
lights energy
for?
Cell wall - strengthens
20the
cell
Part
Nucleus
Function
Cell
membrane
Cytoplasm
Filled with cell sap
Gives plant cells a
rigid shape
Contains the green pigment
chlorophyll that traps light for
photosynthesis
Plant /animals
BOTH
NOTE!!
BOTH
These
BOTH
are not
in the
correct
Plant
cells
onlyorder
Cell wall
Controls all cell
activities (the brain of the cell)
Vacuole
Controls what can enter Plant cells
and leave the cell
only
Chloroplast
Where all the chemical
reactions
take- Excellence
place
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Plant cells
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only
Part
Nucleus
Function
Plant /animals
Controls all cell
activities
BOTH
Cell
membrane
Cytoplasm
Controls what can enter
and leave the cell
Where all the chemical
reactions take place
BOTH
Cell wall
Gives plant cells a rigid
shape and support.
Plant cells
only
Vacuole
Filled with cell sap
Plant cells
only
Chloroplast
Contains the green pigment Plant cells
chlorophyll that traps light
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only
for photosynthesis
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BOTH
We use dyes called stains
in biology.
• Why do we use Stains when
preparing slides?
• This is because some of the cells
structures are not clear and can
be shown more clearly when a
stain has been added.
Iodine: Stains the nuclei in plants
and animal cells brown or blue-black.
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Experiment:
Staining of Cells
Now, over to
you…..
•Prepare and
examine living
tissue under the
microscope
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Using a Microscope
• Your teacher will show you how
to correctly set up a microscope.
• Prepare an onion cell
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Stain - Iodine solution
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