Photosynthesis Light Reaction

Front

What supplies the electrons that are lost in photosystem I (PSI)?

Back

The electrons from photosystem II (PS II) supply the electrons lost in PSI.

Front

What is the ultimate source of energy for life on Earth?

Back

Sunlight is the ultimate source of energy for life on Earth.

Front

During which process is water split?

Back

Water is split during photosystem II of the light-dependent reaction.

Front

What is the primary function of the light reactions of photosynthesis?

Back

The primary function of the light reactions is to produce NADPH and ATP.

Front

Which of the following is NOT a product of the light reactions?

Back

Glucose is NOT a product of the light reactions.

Front

What are the two main products of the light reactions?

Back

The two main products of the light reactions are NADPH and ATP.

Front

What role does sunlight play in photosynthesis?

Back

Sunlight provides the energy needed for the light reactions of photosynthesis.

Front

What is the significance of oxygen produced during photosynthesis?

Back

Oxygen is a byproduct of the light reactions and is released into the atmosphere.

Front

What is the difference between light-dependent and light-independent reactions?

Back

Light-dependent reactions require sunlight to produce ATP and NADPH, while light-independent reactions (Calvin cycle) use these products to synthesize glucose.

Front

What is chlorophyll?

Back

Chlorophyll is the green pigment in plants that absorbs sunlight for photosynthesis.