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

Where do the light-dependent reactions occur?

Back

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

Front

What are light-dependent reactions?

Back

Light-dependent reactions are the first stage of photosynthesis where light energy is captured and converted into chemical energy (ATP and NADPH).

Front

What is chlorophyll?

Back

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

Front

Where does the Calvin Cycle occur?

Back

The Calvin Cycle occurs in the stroma of chloroplasts.

Front

What is the role of the Electron Transport Chain in photosynthesis?

Back

The Electron Transport Chain transfers electrons from photosystem II to photosystem I, creating a proton gradient that helps produce ATP.

Front

What is the main product of the Calvin Cycle?

Back

The main product of the Calvin Cycle is glucose, which is used by the plant for energy and growth.

Front

What is the significance of water in photosynthesis?

Back

Water is a reactant in photosynthesis that provides electrons and protons, and it is split during the light-dependent reactions to release oxygen.

Front

What is the function of NADPH in photosynthesis?

Back

NADPH is a carrier molecule that transports high-energy electrons to the Calvin Cycle, where they are used to convert carbon dioxide into glucose.

Front

What is the difference between light-dependent and light-independent reactions?

Back

Light-dependent reactions require light to produce ATP and NADPH, while light-independent reactions (Calvin Cycle) do not require light and use ATP and NADPH to synthesize glucose.