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Independent and DependentReactions

Two steps of photosynthesis

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Light Dependent Reaction

Solar energy is absorbedby chlorophyll in thechloroplasts

That energy + H2O

enter the thylakoid(discs) The chemical reaction

that occurs splits thewater molecule

The product is Oxygen. Energy is transferred to

the light-independentreaction by ATP.

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Adenosine Triphosphate

Source of energyfor all cells.

Energy powers

important functionswithin cells such asbuilding molecules.

Found in small

amounts Not a storage

molecule Short term use only

http://upload.wikimedia.org/wikipedia/commons/0/07/ATP_structure.svg

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ATP

ATP is an energytransport molecule.

It is a nucleotide Transfers energyfrom the light-dependent cycle tothe light-independent cycle.

http://en.wikipedia.org/wiki/Image:ATP-xtal-3D-sticks.png

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Calvin Cycle (Light Independent)

The oxygen byproductleaves the chloroplastsand moves into thechloroplasts liquid, thestroma.

ATP from the lightreaction and carbondioxide absorbed fromthe air enter the CalvinCycle.

These 3 molecules areused in chemicalreactions that produceglucose molecules thatget stored by the

producer.

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Review

1. Plants are producers becausethey have chloroplaststhat_________.

2. Are ATP molecules used for longterm or short term energy?

3. What is the difference b/n ADPand ATP?

4. What does an ATP moleculeconsist of?

5. How is Carbon used by producers?