Photosynthesis II

Christopherson

Photosynthesis Function

To produce glucose

(food) for producers

The formula for glucose:

C6H12O6

Photosynthesis: How?Plants absorb sunlight energy, carbon

dioxide and water to make glucose

*Where are we?

Structure: Chloroplast

Stroma: Fluid inside the chloroplast

Thylakoid: Group of pigments; absorb sunlight energy

Grana: Stack of Thylakoids

Photosynthesis Summative Equation (Formula)

CO2 H2O+ C6H12O6 + O2

Sunlight Energy

Reactants What is needed

Products What is produced

The giant sequoia tree is one of the largest trees on earth. It starts as a small seedling and grows into an enormous tree. Five children can stretch their arms across the width of the truck of one of the large sequoia trees! Where did most of the MATTER that makes up the wood and leaves of this huge tree originally come from? Circle the best answer.

• Sunlight• Water• Soil• Carbon dioxide• Oxygen• Minerals• Chlorophyll

Explain your thinking. How did you decide where most of the matter that makes up this tree came from?

Do you think Harvard graduates

would know the answer to this

question?

Stop video 1:30

Light Dependent Reaction: Location

Thylakoid: Location of pigments; absorb sunlight

energy

Light-Dependent Reaction

H2O

H

O

H O2

1. Pigments absorb sunlight energy2. Plants absorb

water; break it down into H’s and O’s

3. Oxygen’s combine and leave as oxygen gas

O

H

H

Light-Dependent Reaction: Reactants

H2O

H

O

H

O2

Water

O

H

H

Hint: Look at arrows going in

SunlightEnergy

Light-Dependent Reaction: Products

H2O

H

O

H

O2

O

H

H

Hint: Look at arrows going out

Oxygen

Calvin Cycle: Location

Stroma: Fluid inside the chloroplast

Calvin Cycle

CO2 O2

CCO2

CO2

CO2

CO2

CO2

CC

C

CC

O2

O2

O2

O2

O2

1. Carbon dioxide is released by consumers and producers

2. Producers absorb carbon dioxide; break off the carbon; and release oxygen.3. Process continues until six carbons are collected

4. The six carbons, the stored energy from the sun, hydrogen, and oxygen ALL combine together to make Glucose C6H12O6

C6H12O6

Why are 6 carbon dioxide molecules absorbed?

Need 6 carbons from carbon dioxide to make:

C6H12O6Glucose

Reactants: Calvin Cycle

CO2 O2

CCO2

CO2

CO2

CO2

CO2

CC

C

CC

O2

O2

O2

O2

O2

C6H12O6

Carbondioxide

Products: Calvin Cycle

CO2 O2

CCO2

CO2

CO2

CO2

CO2

CC

C

CC

O2

O2

O2

O2

O2

C6H12O6

Oxygen

Glucose

What does Photosynthesis REALLY look like???

Photosynthesis Song

The giant sequoia tree is one of the largest trees on earth. It starts as a small seedling and grows into an enormous tree. Five children can stretch their arms across the width of the truck of one of the large sequoia trees! Where did most of the MATTER that makes up the wood and leaves of this huge tree originally come from? Circle the best answer.

• Sunlight• Water• Soil• Carbon dioxide• Oxygen• Minerals• Chlorophyll

Explain your thinking. How did you decide where most of the matter that makes up this tree came from?