Overview of cycle between autotrophs and heterotrophs. A heterotroph (/ËhÉtÉrÉµtroÊf/ ; á¼ÏÎµÏÎ¿Ï heteros = another, different and ÏÏÎ¿ÏÎ® trophe = nutrition) is an organism that cannot fix carbon and uses organic carbon for growth.ost heterotrophs are chemoorganoheterotrophs (or simply organotrophs) who utilize organic compounds both as a carbon source and an energy source. The term heterotroph very often refers to chemoorganoheterotrophs.
Fumaric acid or trans-butenedioic acid is the chemical compound with the formula HO 2 CCH=CHCO 2 H. This white crystalline compound is one of two isomeric unsaturated dicarboxylic acids, the other being maleic acid.umaric acid has been used a food acidulant since 1946. It is approved for use as a food additive in the EU, USA and Australia and New Zealand. As a food additive, it is used as an acidity regulator and can be denoted by the E number E297.
Formic acid (also called methanoic acid) is the simplest carboxylic acid. Its chemical formula is H C O OH or HCO 2 H. It is an important intermediate in chemical synthesis and occurs naturally, most notably in some ants.ormic acid was long considered a chemical compound of only minor interest in the chemical industry. In the late 1960s, however, significant quantities of it became available as a byproduct of acetic acid production. It now finds increasing use as a preservative and antibacterial in livestock feed.