Current location - Health Preservation Learning Network - Health preserving class - Prokaryotes have autotrophs and heterotrophs, right? why
Prokaryotes have autotrophs and heterotrophs, right? why
This sentence is correct.

1. There are autotrophs in prokaryotes.

For example: cyanobacteria. Cyanobacteria is a kind of large single-celled prokaryote with a long history of evolution, Gram-negative staining, no flagella, chlorophyll a, but no chloroplast (algae different from eukaryotes), which can produce oxygen and photosynthesis.

2. heterotrophs exists in prokaryotes.

For example, mycoplasma binds to host cells through adhesion, and obtains lipids and cholesterol from cell membranes, thus damaging cell membranes. Ureaplasma urealyticum can decompose urea and release a lot of ammonia, which is toxic to cells.

Therefore, "there are both autotrophs and heterotrophs in prokaryotes." This sentence is correct.

Extended data

1. Autotrophic organisms can obtain nutrients and energy needed for their own life activities in the process of synthesizing organic matter from inorganic substances. Green plants, such as algae, mosses, ferns and seed plants, rely on their unique chloroplasts and use solar energy to synthesize carbon dioxide and water into organic substances to feed themselves. Some chemically synthetic bacteria, such as nitrifying bacteria, sulfur bacteria, iron bacteria, etc. , can oxidize inorganic substances, and use the energy released by oxidation to make the required nutrients.

2. heterotrophs can only take the ready-made organic matter in the external environment as the source of energy and carbon, ingest these organic matters into the body, turn them into its own components, and store energy. Such as: fungi living in decay and parasitism, most kinds of bacteria.

Baidu Encyclopedia-Prokaryotes

Baidu encyclopedia-cyanobacteria

Baidu Encyclopedia-heterotrophs

Baidu encyclopedia-autotrophic organism

Baidu encyclopedia-mycoplasma