Bell Work...Bell Work A diagram representing the relationship between photosynthesis and cellular...

Bell Work• What organelle does photosynthesis occur in?

• What reaction takes place in the thylakoid?

• What reaction takes place in the stroma?

• Which reaction do you think requires sunlight?

Sunday, November 4, 2012





chloroplast






chloroplast

light dependent






chloroplast

light dependent

light independent






chloroplast

light dependent

light independent

light dependent


Bell WorkA diagram representing the relationship between photosynthesis and cellular respiration is shown below. The numbered boxes in the diagram represent which of the following?a. 1 - water; 2 - nitrogen

b. 1 - nitrogen; 2 - oxygenc. 1 - oxygen; 2 - carbon dioxided. 1 - carbon dioxide; 2 - water






b. 1 - nitrogen; 2 - oxygenc. 1 - oxygen; 2 - carbon dioxided. 1 - carbon dioxide; 2 - watera. is wrong because plants require water, they do not release water






b. 1 - nitrogen; 2 - oxygenc. 1 - oxygen; 2 - carbon dioxided. 1 - carbon dioxide; 2 - waterb. is wrong because animals require oxygen, they do not release oxygen






b. 1 - nitrogen; 2 - oxygenc. 1 - oxygen; 2 - carbon dioxided. 1 - carbon dioxide; 2 - waterd. is wrong because plants require carbon dioxide, they do not release carbon dioxide






b. 1 - nitrogen; 2 - oxygenc. 1 - oxygen; 2 - carbon dioxided. 1 - carbon dioxide; 2 - waterc. is right because animals get oxygen from plants, and plants get carbon dioxide from animals


Photosynthesis


Photosynthesis• process by which plants make their own food



• 6CO2 + 6H2O + sunlight C6H12O6 + 6O2




• two reactions




• two reactions

• light dependent




• two reactions

• light dependent

• light independent


Photosynthesis


Photosynthesis sun


Photosynthesis

energybuilding

reactions

sun


Photosynthesis

energybuilding

reactionsATP

sun


Photosynthesis

energybuilding

reactions

sugarbuilding

reactions

ATP

sun


Photosynthesis

energybuilding

reactions

sugarbuilding

reactions

ATP

CO2

sun


Photosynthesis

energybuilding

reactions

sugarbuilding

reactions

ATP

CO2 sugar

sun


Photosynthesis

energybuilding

reactions

sugarbuilding

reactions

ATPADP

CO2 sugar

sun


Photosynthesis

energybuilding

reactions

sugarbuilding

reactions

ATPADP

CO2 sugar

sun

Light Dependent


Photosynthesis

energybuilding

reactions

sugarbuilding

reactions

ATPADP

CO2 sugar

sun

Light Dependent

Light Independent


Light Dependent Reaction

O2

H2O

Energy BuildingReactions

sunlight

ATP


Light Dependent Reaction• Energy producing reaction that requires sunlight

O2

H2O


sunlight

ATP


Light Dependent Reaction• Energy producing reaction that requires sunlight

O2

H2O


sunlight

ATP

H2O ATP O2lightenergy

→ ++


Light Dependent Reaction


Light Dependent Reaction• occurs in thylakoid



• electrons in chlorophyll absorb light energy




• water molecules are split





• oxygen is released






• hydrogen bonds to NADP+ to form NADPH






• hydrogen bonds to NADP+ to form NADPH

• energy is produced (ADP turned into ATP)


Light Independent Reaction

sugarsC6H12O6

CO2

SugarBuilding

Reactions

ATP

ADP

O2

H2O


Light Independent ReactionSugar producing reaction that does not require sunlight, but does require energy and hydrogen from the first stage.

sugarsC6H12O6

CO2

SugarBuilding

Reactions

ATP

ADP

O2

H2O


Light Independent ReactionSugar producing reaction that does not require sunlight, but does require energy and hydrogen from the first stage.

sugarsC6H12O6

CO2

SugarBuilding

Reactions

ATP

ADP

O2

H2O

CO2 C6H12O6 ADPATP → ++


Light Independent Reactions


Light Independent Reactions• also known as the Calvin Cycle



• occurs in the stroma




• carbon dioxide and hydrogen combine to form simple sugars





• simple sugars can be joined to form carbohydrates, such as cellulose and starch






• cellulose:






• cellulose:: makes up the cell wall






• cellulose:

• starch:

: makes up the cell wall






• cellulose:

• starch:

: makes up the cell wall

: used for energy storage


Photosynthesis Summary


Requires

Photosynthesis SummaryProduces


Requires

• Carbon Dioxide



Requires

• Carbon Dioxide

• Water



Requires

• Carbon Dioxide

• Water

• Sunlight



Requires

• Carbon Dioxide

• Water

• Sunlight


• Sugar


Requires

• Carbon Dioxide

• Water

• Sunlight


• Sugar

• Oxygen


Photosynthesis Summary


Light Dependent

Photosynthesis SummaryLight Independent


Light Dependent

• requires light and water



Light Dependent


• produces oxygen & ATP



Light Dependent



• releases the oxygen



Light Dependent





• requires CO2 and ATP


Light Dependent






• produces sugar


Light Dependent






• produces sugar

• stores the sugar


Dependent or Independent1. this stage requires light2. electrons in chlorophyll absorb light energy3. energy from electrons convert ADP to ATP4. water molecules are split to form oxygen and hydrogen5. hydrogen ions attach to carrier molecules (NADP+)6. this stage does not require light7. uses energy to convert carbon dioxide and hydrogen into sugars8. stores excess sugars as starch and cellulose9. this stage can happen at night10. this stage is sometimes called the Calvin Cycle


Review Questions1. What is photosynthesis?2. In what organelle does the process occur?3. What is the pigment that allows the process to occur?4. In what part of this organelle does the light dependent reaction take place?5. What is the inside of this part called?6. What is a stack of this part called?7. What happens to water during the light dependent reaction?8. What is produced during the light dependent reaction?9. Where does the light independent reaction take place?10. What is produced during the light independent reaction?11. What is the formula for photosynthesis?12. In which stage of photosynthesis is oxygen given off?


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Bell Work...Bell Work A diagram representing the relationship between photosynthesis and cellular...

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