Green plants, algae, and some bacteria capture solar radiation and convert it to organic molecules in a process called .

The process by which green plants, algae, and some bacteria capture solar radiation and convert it to organic molecules is called photosynthesis.

Here are the steps of this process:

1. Absorption of Light: The chlorophyll in the chloroplasts of the plant cells absorbs sunlight, primarily in the blue and red wavelengths. The light energy is converted to chemical energy, which is stored in the form of ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate).

2. Carbon Dioxide Fixation: The plant takes in carbon dioxide from the environment. The enzyme RuBisCO catalyzes a reaction between carbon dioxide and a five-carbon sugar called ribulose bisphosphate. This results in a six-carbon compound that immediately splits into two three-carbon compounds.

3. Reduction: The three-carbon compounds are reduced to glyceraldehyde-3-phosphate (G3P) using the ATP and NADPH produced in the light-dependent reactions. Some of the G3P molecules are used to produce glucose and other organic molecules.

4. Regeneration: The remaining G3P molecules are used to regenerate ribulose bisphosphate so that the cycle can continue.

Through photosynthesis, plants convert light energy into chemical energy, which can be used to fuel the plant's activities.