Accessing Prior KnowledgeAccessing Prior Knowledge

Think about plants Think about plants growing in parks or growing in parks or around your home.around your home.

Why don’t bushes or Why don’t bushes or other trees usually other trees usually grow underneath grow underneath large trees?large trees?

Think Think Pair Pair Share Share

Mini Inquiry ActivityMini Inquiry Activity

What will it look like when the What will it look like when the foil is removed?foil is removed?

Think About It = Exit SlipThink About It = Exit Slip

1.1. What pattern did you What pattern did you observe in the location of observe in the location of the Euglena?the Euglena?

2.2. Why do you think they Why do you think they behave this way?behave this way?

3.3. What is the source of What is the source of energy that powers the energy that powers the Euglenas’ swimming?Euglenas’ swimming?

Photosynthesis and the Photosynthesis and the Production of EnergyProduction of Energy

How do organisms get energy?How do organisms get energy?

Plants convert the sun’s energy into usable energy by photosynthesis

How do organisms get energy?How do organisms get energy?

Animals convert the energy stored in food into usable energy by respiration.

How do plants receive energy?How do plants receive energy? Plants receive energy Plants receive energy

from the sun in from the sun in wavelengths of lightwavelengths of light

Plants mostly absorb Plants mostly absorb redred and and blueblue wavelengths. wavelengths.

They do not absorb They do not absorb green wavelengths, green wavelengths, so that is why plants so that is why plants are are greengreen. .

Click on the LinkClick on the Link

leaf absorbing light

Green light is low for both.It is reflected rather than absorbed!

EnergyEnergy

Energy is neither Energy is neither created nor destroyed.created nor destroyed.

There is energy all There is energy all around us. around us.

Usually you will feel Usually you will feel this energy as heat. this energy as heat.

Plants store the sun’s Plants store the sun’s energy in energy in Chemical Chemical BondsBonds

Plant EnergyPlant Energy A Plant captures this energy and stores it in the A Plant captures this energy and stores it in the

chemical bonds of ATPchemical bonds of ATP.. ADPADP is adenosine is adenosine didiphosphatephosphate If you add a phosphate group (P) to ADP you If you add a phosphate group (P) to ADP you

get ATPget ATP ATP ATP is adenosine is adenosine tritriphosphatephosphate

ENERGY IN CHEMICAL BONDSENERGY IN CHEMICAL BONDS

ATP can be compared to a ATP can be compared to a fully charged battery fully charged battery because both contain stored because both contain stored energyenergy

ADP resembles a partially ADP resembles a partially charged batterycharged battery

It is a re-chargable battery It is a re-chargable battery because ADP can add a because ADP can add a Phosphate to make ATPPhosphate to make ATP P P P

Energy Partial Charge

Energy Fully Charged

PhotosynthesisPhotosynthesis

Photosynthesis Photosynthesis happens in the happens in the chloroplast chloroplast

In theIn the Chloroplast Chloroplast isis Chlorophyll Chlorophyll

ChlorophyllChlorophyll grabs grabs sunlight and starts sunlight and starts the processthe process

LIGHT (Energy) + COLIGHT (Energy) + CO22 + H + H22O --> O -->

CC66HH1212OO6 6 + O+ O22

LIGHT (Energy) + COLIGHT (Energy) + CO22 + H + H22O --> O -->

CC66HH1212OO6 6 + O+ O22

LIGHT (Energy) + COLIGHT (Energy) + CO22 + H + H22O --> O -->

CC66HH1212OO6 6 + O+ O22

How do we get energy?How do we get energy? The process starts with PhotosynthesisThe process starts with Photosynthesis Energy (Glucose Sugar) is made in the chloroplast.Energy (Glucose Sugar) is made in the chloroplast. LIGHT (Energy) + 6COLIGHT (Energy) + 6CO22 + 6H + 6H22O O C C66HH1212OO6 6 + 6O+ 6O22

How do we get energy?How do we get energy? The process of Respiration takes that energy out The process of Respiration takes that energy out

of the sugar molecules.of the sugar molecules. CC66HH1212OO6 6 + 6O+ 6O2 2 Energy (ATP) + 6CO Energy (ATP) + 6CO22 + 6H + 6H22O O Energy (ATP) is made in the mitochondria!Energy (ATP) is made in the mitochondria!

Do you see any similarities?Do you see any similarities?

Photosynthesis Chemical Equation:Photosynthesis Chemical Equation: LIGHT (Energy) + 6COLIGHT (Energy) + 6CO22 + 6H + 6H22O O C C66HH1212OO6 6 + 6O+ 6O22

Respiration Chemical Equation:Respiration Chemical Equation: CC66HH1212OO6 6 + 6O+ 6O2 2 Energy (ATP) + 6CO Energy (ATP) + 6CO22 + 6H + 6H22O O

Which cycle do these processes belong?Which cycle do these processes belong?

CarbonCycle

Photosynthesis Skit!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 andPHOSPHATE.

SUNLIGHT exits the cell and runs off of the stage.

NARRATOR: The trapping of energy in the ATP bond is an exergonic reaction, meaningthat 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.