Photoautotrophs use
A) light as an energy source and methane as a carbon source.
B) light as an energy source and CO2 as a carbon source.
C) N2 as an energy source and CO2 as a carbon source.
D) CO2 as both an energy source and a carbon source.
E) H2S as an energy source and CO2 as a carbon source.

Question

Quizplus · Accepted Answer

Photoautotrophs use light as an energy source and CO2 as a carbon source. This is because they are able to use the energy from sunlight to convert carbon dioxide into organic compounds, such as sugars, that they can use as a source of energy and to build their cell structures. Other options listed do not accurately reflect the energy and carbon sources used by photoautotrophs.

Photoautotrophs Use