Biology · Kingdom Prokaryote

Cyanobacteria synthesize their own food from inorganic substances and this fall into the category of photoautotrophs.

Cyanobacteria are photoautotrophic bacteria. Photoautotrophic organisms, including cyanobacteria, are capable of using sunlight as an energy source to carry out photosynthesis and convert inorganic compounds, such as carbon dioxide and water, into organic compounds, particularly sugars. Photoautotrophic organisms, including cyanobacteria, are capable of using sunlight as an energy source to carry out photosynthesis and convert inorganic compounds, such as carbon dioxide and water, into organic compounds, particularly sugars.

Chemosynthetic bacteria are a group of bacteria that obtain energy by carrying out chemosynthesis. chemosynthetic bacteria use inorganic molecules such as hydrogen sulfide, ammonia, or iron as a source of energy to convert carbon dioxide into organic compounds.

Saprotrophic bacteria, also known as saprophytic bacteria, are bacteria that obtain their energy by decomposing dead organic matter.

Parasitic bacteria are bacteria that live and feed off a host organism, causing harm or disease to the host. They rely on the host for nutrients and energy.