Chapter 16 lecture 2

Photosynthesis: The Calvin Cycle Life from Air

The Calvin Cycle Whoops! Wrong Calvin…

Remember what it means to be a plant… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Autotrophs ,[object Object],[object Object],+ water + energy  glucose + oxygen carbon dioxide 6CO 2 6H 2 O C 6 H 12 O 6 6O 2 light energy  + + +

Light reactions ,[object Object],[object Object],[object Object],[object Object], energy  reducing power   build stuff !!

How is that helpful? ,[object Object],[object Object],[object Object],CO 2 C 6 H 12 O 6 NADPH NADP reduce CO 2 carbon fixation NADP

From CO 2  C 6 H 12 O 6 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

From Light reactions to Calvin cycle ,[object Object],[object Object],[object Object],[object Object],[object Object]

starch, sucrose, cellulose & more Calvin cycle RuBP Rubisco 1. Carbon fixation 2. Reduction 3. Regeneration of RuBP ribulose bisphosphate ribulose bisphosphate carboxylase used to make glucose G3P glyceraldehyde-3-P PGA phosphoglycerate C C C 1C CO 2 5C 3C 6 NADP 6 NADPH 6 ADP 6 ATP 3 ADP 3 ATP 3C 3C C C C C C C C C C C C C C C C 6C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C = = | H | H | H | H | H | H C C C – –

glucose C-C-C-C-C-C fructose-6P P- C-C-C-C-C-C -P DHAP P- C-C-C G3P C-C-C -P pyruvate C-C-C 2 ATP 2 ADP Remember G3P? glycolysis 2 NAD + 2 NADH 4 ADP 4 ATP

Calvin Cycle Glyceraldehyde 3-phosphate (3C) (G3P) Glucose and other sugars Ribulose 1,5-bisphosphate (RuBP) (5C) 3-phosphoglycerate (3C) (PGA) Glyceraldehyde 3-phosphate (3C) Glyceraldehyde 3-phosphate (3C) (G3P) Rubisco Reforming RuBP Reverse of glycolysis Carbon fixation Stroma of chloroplast Carbon dioxide (CO 2 ) 6 NADPH 3 ATP 3 ADP 6 ATP 6 ADP 6 NADP + 2P i 1,3-bisphosphoglycerate (3C) 6P i

To G-3-P and Beyond ! ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Rubisco ** test question in 2011 test, had to know actual name ,[object Object],[object Object],[object Object],[object Object],[object Object]

Accounting ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Photosynthesis summary ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NADP ADP

Summary of photosynthesis ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],6CO 2 6H 2 O C 6 H 12 O 6 6O 2 light energy  + + +

Supporting a biosphere ,[object Object],[object Object],[object Object]

The poetic perspective… ,[object Object],[object Object],Then all the cats, dogs, rats, people & elephants… are really strands of air woven together by sunlight! sun air

Chapter 16 lecture 2

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