Transcript photo_resp - noraddin

Accessing Prior Knowledge
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Think about plants
growing in parks or
around your home.
Why don’t bushes or
other trees usually
grow underneath
large trees?
Think  Pair  Share
Mini Inquiry Activity
What will it look like when the
foil is removed?
Think About It = Exit Slip
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What pattern did you
observe in the location of
the Euglena?
Why do you think they
behave this way?
What is the source of
energy that powers the
Euglenas’ swimming?
Photosynthesis and the
Production of Energy
How do organisms get energy?
Plants convert the
sun’s energy into
usable energy by
photosynthesis
How do organisms get energy?
Animals convert
the energy stored
in food into
usable energy by
respiration.
How do plants receive energy?
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Plants receive energy
from the sun in
wavelengths of light
Plants mostly absorb
red and blue
wavelengths.
They do not absorb
green wavelengths,
so that is why plants
are green.
Click on the Link
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leaf absorbing light
Green light is
low for both.
It is reflected
rather than
absorbed!
Energy
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Energy is neither
created nor destroyed.
There is energy all
around us.
Usually you will feel
this energy as heat.
Plants store the sun’s
energy in Chemical
Bonds
Plant Energy
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A Plant captures this energy and stores it in the
chemical bonds of ATP.
ADP is adenosine diphosphate
If you add a phosphate group (P) to ADP you
get ATP
ATP is adenosine triphosphate
ENERGY IN CHEMICAL BONDS
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ATP can be compared to
a fully charged battery
because both contain
stored energy
ADP resembles a
partially charged battery
It is a re-chargable
battery because ADP can
add a Phosphate to make
ATP
Energy Partial Charge
P
P
P
Energy Fully Charged
Photosynthesis
Photosynthesis
happens in the
chloroplast
 In the Chloroplast
is Chlorophyll
 Chlorophyll grabs
sunlight and starts
the process
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LIGHT (Energy) + CO2 + H2O -->
C6H12O6 + O2
LIGHT (Energy) + CO2 + H2O -->
C6H12O6 + O2
LIGHT (Energy) + CO2 + H2O -->
C6H12O6 + O2
How do we get energy?
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The process starts with Photosynthesis
Energy (Glucose Sugar) is made in the chloroplast.
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LIGHT (Energy) + 6CO2 + 6H2O  C6H12O6 + 6O2
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How do we get energy?
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The process of Respiration takes that energy out
of the sugar molecules.
C6H12O6 + 6O2  Energy (ATP) + 6CO2 + 6H2O
Energy (ATP) is made in the mitochondria!
Do you see any similarities?
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Photosynthesis Chemical Equation:
LIGHT (Energy) + 6CO2 + 6H2O  C6H12O6 + 6O2
Respiration Chemical Equation:
C6H12O6 + 6O2  Energy (ATP) + 6CO2 + 6H2O
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Which cycle do these processes belong?
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Carbon
Cycle
Photosynthesis Skit!
"How is energy from the sun used to fuel green plants?"
Act I - Photosynthesis
PLANT squats or sits on the stage beside the plant cell.
NARRATOR: Plants acquire energy from the sun. Here we see a plant and a
microscope view of a cell from the plant.
PLANT bows and acknowledges its cell.
ADENOSINE DIPHOSPHATE and PHOSPHATE enter and mill about inside of the
cell (marked on the floor).
NARRATOR: Plants use energy from the sun to make chemical bonds in the
molecule ATP, adenosine triphosphate. The energy is stored in the chemical bond
between ADP, adenosine diphosphate, and a phosphate group.
SUNLIGHT runs into the cell and joins hands of ADENOSINE DIPHOSPHATE and
PHOSPHATE.
SUNLIGHT exits the cell and runs off of the stage.
NARRATOR: The trapping of energy in the ATP bond is an exergonic reaction, meaning
that it is spontaneous, requiring no further input of energy.
NARRATOR: The ATP can then be used in an endergonic reaction to make a sugar
molecule from the carbon dioxide that plants "breathe" in.
Six CO2 molecules enter the plant cell.
They are each wearing an oxygen (O2) placard and a Carbon (C) placard.
ADP and PHOSPHATE join the hands of the six CO2 molecules so they form a circle.
ADP and PHOSPHATE let go of each others hands and mill about in the plant cell.
CO2: We are glucose!
NARRATOR: Glucose is a six carbon sugar that stores energy in the bonds that hold
carbon atoms together. This reaction uses carbon dioxide and releases oxygen from the
cell.
STAGEHAND takes the O2 placards from the glucose molecule and exits the cell.
NARRATOR: ADP and PHOSPHATE are now ready to capture more energy from the
sun.