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 is the primary pigment involved in photosynthesis?

Back

Chlorophyll is the primary pigment in chloroplasts that absorbs light energy for photosynthesis.

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 of photosynthesis occur?

Back

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

Front

What is the role of chlorophyll in photosynthesis?

Back

Chlorophyll absorbs light energy, primarily in the blue and red wavelengths, and converts it into chemical energy.

Front

What is produced during the light-dependent reactions?

Back

During the light-dependent reactions, ATP and NADPH are produced, along with oxygen as a byproduct.

Front

What is the significance of the Calvin cycle?

Back

The Calvin cycle uses ATP and NADPH from the light-dependent reactions to convert carbon dioxide into glucose.

Front

What is the Second Law of Thermodynamics?

Back

The Second Law of Thermodynamics states that energy conversions are not 100% efficient, and some energy is lost as heat.

Front

Which colors of light are absorbed by chlorophyll?

Back

Chlorophyll absorbs blue and red light but reflects green light, which is why plants appear green.

Front

What are grana in the chloroplast?

Back

Grana are stacks of thylakoids in the chloroplast where the light-dependent reactions of photosynthesis take place.