Reference

There is substantial evidence supporting the presence of biological molecules from bacteria in oil. Microorganisms play a crucial role in the biodegradation of oil, as indicated by articles from NCBI Bookshelf and ScienceDirect. These bacteria produce extracellular polymeric substances (EPS) that act as biosurfactants, enhancing the solubility and bioavailability of oil's hydrophobic organic components. Furthermore, the formation of biofilms around oil by bacteria can block large pores in rock, as detailed in a study published in Frontiers in Microbiology.

The connection between microbes and oil is also highlighted by the fact that certain species of microbes naturally break down oil as part of their diet and live in coastal and off-shore environments. This relationship suggests that oil may contain biological molecules from these bacteria. Additionally, the deep, hot biosphere may still be a source of bacterial life that can impart biological molecules onto oil without the oil having suffered thermal degradation.

Overall, the evidence points to a significant interaction between bacteria and oil, with biological molecules from bacteria being present in oil due to their role in its degradation and the environments in which oil is found. This information is supported by various scientific articles and research papers available online.