Photosynthesis

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 (dark reactions).

Front

Where do the light reactions of photosynthesis occur?

Back

The light reactions occur in the thylakoid membranes of chloroplasts.

Front

What is the primary function of the light reactions?

Back

The primary function of the light reactions is to convert solar energy into chemical energy in the form of ATP and NADPH.

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 plays a crucial role in converting light energy into chemical energy.

Front

What is the Calvin cycle?

Back

The Calvin cycle is the set of light-independent reactions in photosynthesis that occur in the stroma of chloroplasts, where carbon dioxide is fixed into glucose.

Front

What is the source of carbon used to form glucose during photosynthesis?

Back

The source of carbon used to form glucose is carbon dioxide (CO2) from the atmosphere.

Front

What is ATP and why is it important in photosynthesis?

Back

ATP (adenosine triphosphate) is an energy-carrying molecule that provides energy for various cellular processes, including the Calvin cycle in photosynthesis.

Front

What is NADPH and its role in photosynthesis?

Back

NADPH (nicotinamide adenine dinucleotide phosphate) is a reducing agent that provides the high-energy electrons needed for the reduction of carbon dioxide in the Calvin cycle.

Front

What happens if the proton (H+) pump in the thylakoid is not functioning?

Back

If the proton pump in the thylakoid is not functioning, ATP cannot be produced during the light reactions.