Photosynthesis Why plants dont eat What is Photosynthesis?
Photo: Light Synthesis: Putting Together Photosynthesis: putting together with light! Why are plants green? Chlorophyll absorb light All but green
Green is reflected back! What are the two stages? 1st: Light-Dependent Reactions 2nd: Light-Independent Reactions Where do Light-Dependent Reactions Occur?
In the thylakoid stacks of the chloroplast What happens during the light-dependent reactions?
Sunlight powers the production of ATP Water is broken down into oxygen What is a waste product here? What are the steps of Light-Dependent Reactions?
Photosystem II Photosystem I ATP Synthase What happens during Photosystem II?
Chlorophyll absorbs sunlight Sunlight powers electrons to leave H from H20 and move through membrane H+ moves through membrane If H leaves water, what is left? What happens during Photosystem I?
Chlorophyll still absorbs sunlight Electrons (e-) added to NADP+ to make NADPH NADPH moves to the ATP Synthase NADP+ ATP Synthase Photosystem I NADPH What happens during ATP Synthase?
H+ ions move back through membrane Power ATP Synthase to make ADP from ATP Where have we seen this before? Where do Light-Independent Reactions Occur?
In the stroma of the chloroplast What happens during Light-Independent Reactions?
ATP made previously powers making of Glucose CO2 is used to make C6H12O6 (Glucose) How many steps are there in Light-Independent Reactions?
ONE! The Calvin Cycle What happens during the Calvin Cycle?
1. A 5-Carbon molecule attaches to a C from CO2 to become a 6-Carbon molecule 2. Energy (ATP) breaks the 6-carbon into 2 3-carbon molecules 3. 1 of the 3-carbon molecules leaves the cycle, the other continues on. 4. Remaining 3-carbon has energy (ATP) added to become the 5-carbon molecule we started out with! So how does that make a Glucose?
Glucose has 6 carbons The 3-carbon molecule that left, after 2 cycles, comes together to make Glucose! 3C+3C=6C