Light Dependent Reactions

Front

What is the principal chemical compound that living things use to store energy?

Back

ATP (Adenosine Triphosphate)

Front

What organelle allows autotrophs to perform photosynthesis?

Back

Chloroplasts

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

How is ATP formed in the light-dependent reactions?

Back

Through the process of chemiosmosis.

Front

Why do leaves appear green?

Back

Because they contain a molecule named chlorophyll.

Front

What is the role of chlorophyll in photosynthesis?

Back

Chlorophyll absorbs light energy, primarily in the blue and red wavelengths, and converts it into chemical energy.

Front

What are the two main stages of photosynthesis?

Back

Light-dependent reactions and light-independent reactions (Calvin cycle).

Front

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

Back

To transfer electrons and pump protons into the thylakoid lumen, creating a proton gradient.

Front

What is chemiosmosis?

Back

The process by which ATP is produced in the light-dependent reactions as protons flow back across the thylakoid membrane through ATP synthase.

Front

What are the products of the light-dependent reactions?

Back

ATP, NADPH, and oxygen.