In the process of assimilation, organisms cannot directly use inorganic substances to make organic substances, but can only convert ready-made organic substances absorbed from the outside into their own components and store energy. This metabolic type is called heterotrophy.

Chinese name

heterotroph

Foreign name

Heterotrophs.

relative

autotroph

example

Fungi that live in decay and parasitism

Brief introduction of heterotrophs

Heterotrophs refers to those organisms that can only use the ready-made organic matter in the external environment as energy and carbon source, ingest these organic matters into the body, convert them into their own components, and store energy. Such as: fungi living in saprophytic and parasitic life, most kinds of bacteria. Anaerobic is everywhere in biology. Anaerobic organisms, or anaerobic organisms, refer to organisms that do not need oxygen for growth. Anaerobic organisms decompose organic substances such as sugar and protein under anaerobic conditions, but release little energy, so anaerobic organisms are generally small, and most of them are bacteria. It can be roughly divided into three types, namely obligate anaerobic organism, facultative anaerobic organism and anaerobic tolerance anaerobic organism.

Chinese name

Anaerobic organism

Foreign name

anaerobe

subject

biology

trait

It is difficult to survive under aerobic conditions.

Is also called

Anaerobic ion

basic content

Anaerobic bacteria are the main components of normal flora, which widely exist in the deep mucosal surface of human skin and cavity, and can cause infection in any tissues and organs of human body. In the case of tissue ischemia, necrosis or aerobic infection, the oxygen concentration of local tissue decreases, that is, anaerobic infection occurs. It can cause diseases such as gas gangrene, tetanus and botulism. According to the different oxygen tolerance, it can be divided into obligate anaerobic bacteria, microaerobic anaerobic bacteria and facultative anaerobic bacteria. [ 1]