Photosynthesis

Front

What is photosynthesis?

Back

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

Front

What is the primary pigment involved in photosynthesis?

Back

Chlorophyll is the primary pigment involved in photosynthesis, which absorbs light energy.

Front

What are the two main stages of photosynthesis?

Back

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

Front

Where do the light-dependent reactions occur?

Back

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

Front

What is produced during the light-dependent reactions?

Back

The light-dependent reactions produce ATP, NADPH, and oxygen gas.

Front

What is the role of ATP in photosynthesis?

Back

ATP serves as an energy carrier that provides energy for the light-independent reactions (Calvin cycle) of photosynthesis.

Front

What is the role of NADPH in photosynthesis?

Back

NADPH acts as a reducing agent that provides the electrons needed for the conversion of carbon dioxide into glucose during the Calvin cycle.

Front

What is the Calvin cycle?

Back

The Calvin cycle is the series of biochemical reactions that occur in the stroma of chloroplasts, where carbon dioxide is fixed and converted into glucose.

Front

What is the significance of the stroma in photosynthesis?

Back

The stroma is the fluid-filled space in chloroplasts where the light-independent reactions (Calvin cycle) take place.

Front

What is the relationship between photosynthesis and cellular respiration?

Back

Photosynthesis converts carbon dioxide and water into glucose and oxygen, while cellular respiration uses glucose and oxygen to produce energy, carbon dioxide, and water.