carbon, sulfur, and phosphorus cycle

what organisms carry out carbon fixation?

autotrophs, photoautotrophs: plants, algae, cyanobacteria

Chemoautotrophs: bacteria & archaea

what is the organic form of carbon?

CH2O

What is the inorganic form of carbon?

CO2

where do photoheterotroph’s get there organic carbon?

from others

Where do photoheterotrophs get there energy?

sun

where do photoautotrophs get their organic carbon?

Self (CO2)

where do photoautotrophs get their energy?

Sunlight

Where do chemoheterotroph’s get their organic carbon?

others

Where do chemoheterotroph’s get their energy?

chemicals & organic compounds

Where do chemoautotroph’s get their organic carbon?

self (CO2)

Where do chemoautotroph’s get their energy?

chemicals: reduced iron, hydrogen sulfide,

What carries out the process from organic to inorganic Carbon?

heterotrophs

What cycle is most often used to carry out carbon fixation?

Calvin cycle by photoautotrophs

what is the alternative method for carbon fixation?

Reductive TCA cycle by chemoautotrophs

What absorbs phosphorus in phosphorus cycle?

Bacteria, algae, plants

What are examples of inorganic phosphorus?

Soil and rocks

What are examples of organic phosphorus?

Nucleotides, phospholipids

What decomposes phosphorus?

Bacteria & fungi

What is sulfur reduced to prior to assimilation?

SO4 →SO3→H2S