Question

How will two types of organisms, when cultured together, grow when the growth medium contains organic carbon and the growth chamber contains ONLY carbon dioxide. All traces of hydrogen has been removed. Explain.

Answer 1

Both organism can grow in this limiting medium only when the product formed by organism 1 can be substrate for organism 2 and the similarly product formed by organism 2 is become substrate of organism 1.

For eg.spevific organism utilizes organism substances to for CO2 and H2O and ATP by process of breakdown of organic substances (heterotropes). ATP will be utilizes by heterophes for its own survival while other product CO2 and H2O will released outside which are taken by organism 2 (autotrophed) and fixed or convert CO2 and H2O into organism substances. So this cycle continous and both organi can survive easily. It's also called co-culture.

Hope it's clear..thanks