Warm-up 1. Where do the light-dependent reactions take place? 2. Where do free e - s first gain E from the sun during the light-dependent reactions? 3. Where do the free e - s come from? 4. How do the free electrons use their E going from psII to psI? 5. What molecule do the free e - s become a part of? 6. What molecule is made from H + going down its concentration gradient? a. What is the name of the enzyme they travel through?

The Calvin Cycle Happens in the stroma, does not require light, but does require the products from the light- dependent reactions Converts high-E molecules (ATP & NADPH) to sugars –This is where CO 2 comes in

Summary of the Calvin Cycle 1. 6 CO 2 molecules enter from the atmosphere & combine with 6 5-C molecules 6C + 6x5C = 36C 2. They are converted into 12 3-C molecules 12 x 3C = 36C 3. The 3-C molecules convert to higher E forms by taking E from ATP (  ADP) & NADPH (  NADP + ) 4. 2 of the 3-C molecules convert to 6-C sugars (glucose) 5. The other 10 3-C molecules convert back into 5-C molecules to be used in step 1 10 x 3-C = 30C 6 x 5-C = 30C

Equation of Photosynthesis Light-dependent Reactions ADP + NADP + + energy + H 2 O  ATP + NADPH + O 2 Calvin Cycle ATP + NADPH + CO 2  ADP + NADP + + C 6 H 12 O 6 Together: ADP + NADP + + energy + H 2 O + ATP + NADPH + CO 2  ATP + NADPH + O 2 + ADP + NADP + + C 6 H 12 O 6 Overall: (6) CO 2 + (6) H 2 O + energy  C 6 H 12 O 6 + (6) O 2 Carbon + water + light  sugar + oxygen dioxide