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 role of chlorophyll in photosynthesis?

Back

Chlorophyll is the green pigment in chloroplasts that absorbs light energy, primarily in the red and blue wavelengths, to drive the photosynthesis process.

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 in the chloroplast?

Back

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

Front

What are the products of the light-dependent reactions?

Back

The products of the light-dependent reactions are ATP and NADPH, which are used in the Calvin cycle.

Front

What is the Calvin cycle?

Back

The Calvin cycle is the set of light-independent reactions in photosynthesis that convert carbon dioxide and other compounds into glucose.

Front

What is the significance of ATP in photosynthesis?

Back

ATP (adenosine triphosphate) is the energy currency of the cell, providing the energy needed for various biochemical reactions, including those in the Calvin cycle.

Front

What is the function of NADPH in photosynthesis?

Back

NADPH is a reducing agent that provides the high-energy electrons needed for the reduction of carbon dioxide in the Calvin cycle.

Front

Why do leaves appear green?

Back

Leaves appear green because chlorophyll absorbs red and blue light and reflects green light.

Front

What is the role 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.