Photosynthesis Light Reactions

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose, using carbon dioxide and water.

Front

What are the two main stages of photosynthesis?

Back

The two main stages of photosynthesis are the light reactions and the Calvin cycle (light-independent reactions).

Front

Where do the light reactions of photosynthesis occur?

Back

The light reactions occur in the thylakoid membranes of the chloroplasts.

Front

What is the role of chlorophyll in photosynthesis?

Back

Chlorophyll is a pigment that absorbs light energy, primarily in the blue and red wavelengths, and reflects green light.

Front

What are the main products of the light reactions?

Back

The main products of the light reactions are ATP (adenosine triphosphate), NADPH, and oxygen.

Front

What is ATP and why is it important?

Back

ATP (adenosine triphosphate) is the energy currency of the cell, providing energy for various cellular processes.

Front

What is the significance of water in the light reactions?

Back

Water is split during the light reactions to provide electrons, protons, and oxygen; this process is known as photolysis.

Front

What is the molecular formula for glucose?

Back

The molecular formula for glucose is C6H12O6.

Front

What is the ultimate source of energy for photosynthesis?

Back

The ultimate source of energy for photosynthesis is the Sun.

Front

What is the Calvin cycle?

Back

The Calvin cycle is the set of light-independent reactions in photosynthesis that convert carbon dioxide into glucose using ATP and NADPH.