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 main source of energy for all life on Earth?

Back

The main source of energy for all life on Earth comes from the sun.

Front

Why do most plants appear green?

Back

Most plants appear green because chlorophyll reflects green light and absorbs other wavelengths of light, particularly blue and red.

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

What is the role of chlorophyll in photosynthesis?

Back

Chlorophyll is a pigment that absorbs light energy, primarily in the blue and red wavelengths, which is essential for the photosynthesis process.

Front

What are the products of photosynthesis?

Back

The products of photosynthesis are glucose and oxygen.

Front

What is the function of ATP in photosynthesis?

Back

ATP (adenosine triphosphate) acts as a short-term energy storage molecule that provides energy for various cellular processes during photosynthesis.

Front

What is the function of NADPH in photosynthesis?

Back

NADPH is an electron carrier that provides the reducing power needed for the conversion of carbon dioxide into glucose during the Calvin cycle.

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What is the chemical equation for photosynthesis?

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The chemical equation for photosynthesis is 6CO2 + 6H2O + light energy → C6H12O6 + 6O2.

Front

What are light-dependent reactions?

Back

Light-dependent reactions are the first stage of photosynthesis that occur in the thylakoid membranes, where light energy is converted into chemical energy (ATP and NADPH).