The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted
into various chemical forms as it circulates among the atmosphere and terrestrial
and marine ecosystems. The conversion ...
The nitrogen cycle is the process by which nitrogen is converted from ... Nitrogen
is converted from atmospheric nitrogen (N2) into usable forms, such as ... to use
atmospheric nitrogen (N2), it must be "fixed" or converted into ammonia (NH3). ...
This is important because plants can assimilate nitrate into their tissues, and ...
The process is called nitrogen fixation. ... The process of converting nitrogen into
a form plants can use is known as nitrogen? Nitrogen Fixation -Eugene Chung.
These organisms convert nitrogen in the soil to ammonia, which can then be
taken up ... After nitrogen has been fixed, other bacteria convert it into nitrate, in a
process ... Plants cannot use the nitrogen in our atmosphere without the
assistance of ... form of nitrates while animals assimilate their nitrogen by eating
Soil converts nitrogen into a form plants can use. Nitrates in soil and water are
converted to nitrogen by bacteria, fixed by lightning and released into the air ...
Denitrification: Conversion of nitrate to atmospheric forms of nitrogen ... Organic
nitrogen must be converted to ammonium before it is used by plants. ... In the soil,
nitrogen fixating organisms can form special relationships with plants, called ... is
necessary to convert N2 gas into ammonium through this biological process.
Nitrogen in the gaseous form cannot be absorbed and used as a nutrient by
plants and ... Plants can use ammonia as a nitrogen source. ... anaerobic bacteria
will convert them back into nitrogen gas, during a process called denitrification.
Plants normally use nitrogen in only the ammonium and nitrate forms. ... Bacteria
can convert nitrogen to organic forms through fixation. ... Moisture and oxygen
are necessary for microbial function in both the mineralization and nitrification
processes. .... When a plant residue with a wide C:N ratio is incorporated into the
The process of biological nitrogen fixation was discovered by the Dutch ... NH4<sup>+</sup>,
which is then incorporated into amino acids, which can be utilized by the plant.
Plants cannot fix nitrogen on their own, but need it in one form or another to make
... cycle converting nitrogen containing compounds to ammonia, NH3, nitrates, ...
The problem is that green plants can't use the nitrogen that's free in the
atmosphere. ... The process of chemically altering unusable, free atmospheric
nitrogen into a form usable by organisms is referred to as nitrogen fixation. ... The
process of converting ammonia to nitrate, called nitrification, is usually