Photosynthesis - the Calvin Cycle

Why is ATP used in the Calvin Cycle?

Energy is needed to rearrange the two 3-carbon chains so that the stored Hydrogens can be added to them.

How does the cycle start over?

More chemistry happens to molecules in the chloroplast to get back to the 5-carbon Ribose sugar so the cycle can start over.

What sugar is always available in the stroma that starts this cycle?

Ribose sugar - a 5-carbon chain. It has 5 carbons, 10 hydrogens and 5 oxygens.

What is the product of the Calvin Cycle after repeating 6 times?

Glucose

Where does the Calvin Cycle occur?

The entire process happens in the stroma of the chloroplasts.

What happens to the two hydrogens stored in the Light Dependent Reaction?

These are removed from NADP and are bonded to the the two newly arranged 3-carbon chains.

What happens to the new 6-carbon chain?

This chain is unstable and breaks in half to form two 3-carbon chains

What is the role of carbon dioxide in photosynthesis.

This gas adds a 6th carbon to ribose in order to start forming glucose.

What is the purpose of the Calvin Cycle?

This phase uses the ATP and stored Hydrogens made in the previous phase to make glucose.

Where does the ATP for the Calvin Cycle come from?

This stored energy molecule was made by the Light Dependent Reaction.

What is the waste molecule from the Calvin Cycle?

water