Final answer:
A cell that uses an organic carbon source and obtains energy from light is known as a photoheterotroph, different from chemoautotrophs and chemoheterotrophs.
Step-by-step explanation:
A cell that uses an organic carbon source and obtains energy from light would be called a photoheterotroph. Photoheterotrophs are organisms that capture light energy to convert to chemical energy in the cells, while obtaining carbon from organic sources rather than inorganic sources such as carbon dioxide, which is utilized by photoautotrophs. This distinguishes them from other types such as chemoautotrophs, who obtain energy from inorganic chemicals, and chemoheterotrophs, which derive both carbon and energy from organic substances.
A cell that uses an organic carbon source and obtains energy from light would be called a photoheterotroph. Photoheterotrophs capture light energy to convert it into chemical energy in the cells, but they rely on organic sources for their carbon. Examples of photoheterotrophs include purple non-sulfur bacteria, green non-sulfur bacteria, and heliobacteria.