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 Thylakoid: Group of pigments; absorb sunlight energy Stroma: Fluid inside the chloroplast Grana: Stack of Thylakoids

Photosynthesis Summative Equation (Formula) Sunlight Energy CO2 H2O + C6H12O6 O2 + Reactants What is needed Products What is produced

The giant sequoia tree is one of the largest trees on earth 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 3. Oxygen’s combine and leave as oxygen gas Pigments absorb sunlight energy 2. Plants absorb water; break it down into H’s and O’s H O O H H O2 H H2O

Light-Dependent Reaction: Reactants Hint: Look at arrows going in Sunlight Energy H O O H H H Water O2 H2O

Light-Dependent Reaction: Products Hint: Look at arrows going out Oxygen H O O H H H O2 H2O

Calvin Cycle: Location Stroma: Fluid inside the chloroplast

C6H12O6 Calvin Cycle C C C C C C CO2 O2 CO2 O2 CO2 O2 CO2 O2 CO2 O2 Carbon dioxide is released by consumers and producers 2. Producers absorb carbon dioxide; break off the carbon; and release oxygen. 4. The six carbons, the stored energy from the sun, hydrogen, and oxygen ALL combine together to make Glucose C6H12O6 Calvin Cycle 3. Process continues until six carbons are collected CO2 O2 CO2 C O2 CO2 C O2 C6H12O6 CO2 C O2 CO2 C O2 C CO2 O2 C

Why are 6 carbon dioxide molecules absorbed? Need 6 carbons from carbon dioxide to make: C6H12O6 Glucose

Reactants: Calvin Cycle Carbon dioxide CO2 O2 CO2 C O2 CO2 C O2 CO2 C O2 CO2 C O2 C CO2 O2 C C6H12O6

Products: Calvin Cycle Oxygen CO2 O2 CO2 C O2 Glucose CO2 C O2 CO2 C O2 CO2 C O2 C CO2 O2 C C6H12O6

What does Photosynthesis REALLY look like???

Photosynthesis Song

The giant sequoia tree is one of the largest trees on earth 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?