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, and releasing oxygen as a byproduct.

Front

What is the role of chlorophyll in photosynthesis?

Back

Chlorophyll is a green pigment found in plants that absorbs light energy, primarily from the blue and red wavelengths, and reflects green light. It is essential for capturing light energy during 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). The light-dependent reactions convert solar energy into chemical energy (ATP and NADPH), while the Calvin cycle uses that energy to synthesize glucose.

Front

Where does photosynthesis occur in plant cells?

Back

Photosynthesis occurs in the chloroplasts of plant cells.

Front

What is the primary function of the Calvin cycle?

Back

The primary function of the Calvin cycle is to convert carbon dioxide and other compounds into glucose using the energy produced in the light-dependent reactions.

Front

What is the significance of oxygen in photosynthesis?

Back

Oxygen is a byproduct of photosynthesis, released into the atmosphere when water molecules are split during the light-dependent reactions. It is essential for the survival of aerobic organisms.

Front

What factors affect the rate of photosynthesis?

Back

The rate of photosynthesis is affected by light intensity, carbon dioxide concentration, temperature, and the availability of water.

Front

How does light intensity influence photosynthesis?

Back

Increased light intensity generally increases the rate of photosynthesis up to a certain point, after which other factors may become limiting.

Front

What is the role of water in photosynthesis?

Back

Water is a raw material in photosynthesis, providing electrons and protons for the light-dependent reactions and is split to release oxygen.

Front

What is the difference between photosystem I and photosystem II?

Back

Photosystem II captures light energy first and is involved in the splitting of water molecules, while Photosystem I captures light energy later and is involved in the production of NADPH.