Light Dependent Reaction

Front

What are the two products of the light reactions that are needed for the Calvin cycle?

Back

NADPH and ATP

Front

What causes protons to move into the thylakoid during the light-dependent reactions?

Back

The movement of electrons through the electron transport chain.

Front

Which of the following is not needed to start the light reaction: CO2, H2O, or light?

Back

CO2.

Front

What is the waste product of the light-dependent reaction?

Back

Oxygen.

Front

What best describes the light reaction?

Back

It converts light energy to chemical energy of ATP and NADPH.

Front

What role does chlorophyll play in the light-dependent reactions?

Back

Chlorophyll absorbs light energy, which is used to excite electrons.

Front

What is the primary function of the electron transport chain in the light reactions?

Back

To transfer electrons and create a proton gradient.

Front

How is ATP generated during the light-dependent reactions?

Back

Through photophosphorylation, using the proton gradient created by the electron transport chain.

Front

What is the significance of NADPH in photosynthesis?

Back

NADPH provides reducing power for the Calvin cycle.

Front

What happens to water molecules during the light-dependent reactions?

Back

Water molecules are split (photolysis) to release oxygen and provide electrons.