Photosystems 1 & 2

Front

What are Photosystems 1 and 2?

Back

Photosystems 1 and 2 are protein-pigment complexes in the thylakoid membranes of chloroplasts that play a crucial role in the light-dependent reactions of photosynthesis.

Front

Are Photosystems light dependent or light independent?

Back

Photosystems are light dependent.

Front

Where does the plant get H+ to make NADPH?

Back

Plants obtain H+ ions from water.

Front

During the Photosystems, which molecule is the oxygen released from?

Back

The oxygen released during the Photosystems comes from water.

Front

What are the products of photosynthesis that are used as fuel to run the Calvin Cycle?

Back

The products of photosynthesis used in the Calvin Cycle are ATP and NADPH.

Front

What is the main function of Photosystem 1?

Back

The main function of Photosystem 1 is to produce NADPH by transferring electrons to NADP+.

Front

What is the main function of Photosystem 2?

Back

The main function of Photosystem 2 is to split water molecules, releasing oxygen and providing electrons for the electron transport chain.

Front

What is the role of chlorophyll in Photosystems?

Back

Chlorophyll is the pigment that absorbs light energy, which is essential for the photosynthetic process.

Front

What is the electron transport chain?

Back

The electron transport chain is a series of proteins in the thylakoid membrane that transfer electrons from Photosystem 2 to Photosystem 1, generating ATP and NADPH.

Front

What is photolysis?

Back

Photolysis is the process of splitting water molecules into oxygen, protons, and electrons using light energy.