The prefix photo- indicates that an organism will make use of _______ for energy purposes.

Biologists can divide living organisms into two groups:autotrophs and heterotrophs, which differ in _________.

Organisms that use organic molecules as their source of carbon are called:

Organisms that use CO₂ as their source of carbon are called

Cyanobacteria are a group of photosynthetic bacteria. These bacteria use sunlight as their energy source and carbon dioxide as their carbon source. Cyanobacteria are ________________.