The discovery of mitochondrial dna (mtdna) had no effect on which area of scientific investigation?
Solved
Show answers
More tips
Answers on questions: Biology
- B Biology Why are gills, a heart, and a closed circulatory system a much more efficient way of getting oxygen to all the cells than that of insects?...
- M Mathematics A theater can seat 160 people. The number of rows is 6 less than the number of seats in each row. How many rows of seats are there?...
- W World Languages Plese help, i need synonyms and antonyms for this italian words fast...
- S Spanish es un medio para comunicar de manera organizada los resultados de diversos tipos de investigaciones de un público determinado a reporte de noticias de reporte de investigación...
- M Mathematics Can y’all help me please...
Ответ:
Ответ:
The conversation process where nitrogen gas combines with hydrogen to form ammonium ions is known as THE ACTION OF THUNDERSTORMS while when air in the top layer of soil comes into contact with certain bacteria, nitrogen in the air is converted by NITROGEN- FIXING MICROORGANISMS.
Explanation:
About 79% of air is composed of gaseous nitrogen. However, only a few microorganism can make use of this nitrogen. The important sources of nitrogen for plants and most living organisms are the inorganic nitrogenous compounds in soil. In nature, nitrogen is constantly being removed from the soil and returned to it through the NITROGEN CYCLE
Conversation of gaseous Nitrogen into nitrogenous substances such as ammonium and amino-compouds are carried out by:
--> The action of thunderstorms, and
--> NITROGEN- fixing microorganisms.
During thunderstorms, Nitrogen reacts with oxygen to form nitric oxide. The nitric oxide is oxidizes to Nitrogen peroxide which dissolves in rainwater to form nitric and nitrous acid. When these acids enter the soil, they combine with mineral salts to form nitrates. The nitrates then, dissolve in soil water and are absorbed by the plants. These nitrates are converted into plant proteins and become part of the plant body.
Some microorganisms such as the Nitrogen fixing microorganisms are able to absorb nitrogen from the atmosphere and change it into amino-compouds and proteins. Examples of such microorganisms include:
--> the free living bacteria: these include the azotobacter and clostridium
--> the symbiotic bacteria: the rhizobium which is found in the root nodules of leguminous plants