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.
Maleic acid or cis-butenedioic acid is an organic compound that is a dicarboxylic acid, a molecule with two carboxyl groups. Its chemical formula is HO 2 CCHCHCO 2 H. Maleic acid is the cis-isomer of butenedioic acid, whereas fumaric acid is the trans-isomer.It is mainly used as a precursor to fumaric acid, and relative to its parent maleic anhydride, maleic acid has few applications.aleic acid is an industrial raw material for the production of glyoxylic acid by ozonolysis. Maleic acid may be used to form acid addition salts with drugs to make them more stable, such as indacaterol maleate.