Navigation Links
Autotroph


An autotroph (in Greek eauton = self and trophe = nutrition) is an organism that produces its own cell mass and organic compounds from carbon dioxide as sole carbon source, using either light or chemical compounds as a source of energy. Plants and other organisms using photosynthesis are photolithoautotrophs; bacteria that utilize the oxidation of inorganic compounds such as hydrogen sulfide or ferrous iron for energy conservation are chemolithoautotrophs.

Autotrophs are a vital part of the food chain. They take energy from the sun or from inorganic sources and convert it into a form (organic molecules) that they use to carry out biological functions including cell growth; and that other organisms (called heterotrophs) can utilize as food. Thus, heterotrophsanimals, fungi, as well as most bacteria and protozoa — depend on autotrophs for energy and for the raw materials to make complex organic molecules. The heterotrophs obtain energy by breaking down organic molecules in their food. Even carnivorous animals rely on autotrophs because the energy and organic building blocks obtained from their prey comes ultimately from the autotrophs eaten by the prey.

See also


'"/>


(Date:1/22/2015)... N.C. , Jan. 16, 2015  A man-made form ... memory and other mental capabilities in adults with mild ... pilot study led by researchers at Wake Forest Baptist ... adults diagnosed with amnesic mild cognitive impairment (MCI) or ...
(Date:1/22/2015)... YORK and POINT ROBERTS, Washington ... news source covering leading sectors including technology and tech stocks, ... Privacy marketplace featuring master pickpocket and security consultant Apollo ... is stolen and talks about the Wocket™ biometric smart wallet, ...
(Date:1/22/2015)... January 22, 2015 , ... The European Patent Office to present a video retrospective ... nominations to be featured: Christofer Toumazou and Sophie ... finalists and winners of the Award   Starting on ...
Breaking Biology News(10 mins):Nasal Spray with Insulin Equivalent Shows Promise as Treatment for Adults with Mild Cognitive Impairment, Alzheimer's Dementia 2Nasal Spray with Insulin Equivalent Shows Promise as Treatment for Adults with Mild Cognitive Impairment, Alzheimer's Dementia 3Apollo Robbins Talks about the Illusion of Personal Safety and How Easily Your Wallet is Stolen; If a Wocket Wallet is Stolen the Thief Can't do Anything With it! 2Apollo Robbins Talks about the Illusion of Personal Safety and How Easily Your Wallet is Stolen; If a Wocket Wallet is Stolen the Thief Can't do Anything With it! 3Ten Years of the European Inventor Award: A Retrospective Look at the Inventors and Ideas That Have Changed Our Lives 2Ten Years of the European Inventor Award: A Retrospective Look at the Inventors and Ideas That Have Changed Our Lives 3
... of Environment and Hydrology (CEH) have investigated the ecology ... as parasites inside colonies of Myrmica ants, where they ... the peculiar features of this species' ecology is that ... one year. The rest are inactive in the first ...
... (HHMI) international research scholar Peter St George-Hyslop have identified ... common form of Alzheimer's disease. The research implicates a ... after age 65. , In an advance online ... George-Hyslop and colleagues connected the gene to the disease ...
... cancer-suppressing gene has been successfully delivered into the tumors ... administered lipid nanoparticle in a phase I clinical trial at ... The gene, FUS1, also was found to be active ... treated 13 patients in this first-in-human study and we've seen ...
Cached Biology News:Some caterpillers just don't want to grow up 2Scientists discover a new risk factor for Alzheimer's 2Scientists discover a new risk factor for Alzheimer's 3Intravenous nanoparticle gene therapy shows activity in stage IV lung cancer 2
Other biology definitionOther Tags