Biological fixation - nitrogen fixation, Biology

Assignment Help:

Biological fixation - Nitrogen Fixation

Approximately 63% of all nitrogen fixed is through biological fixation. Nitrogen fixing organisms are primarily prokaryotes; bacteria and blue green algae. Nitrogen fixation requires activation of molecular nitrogen by splitting nitrogen into two atoms of free nitrogen N2 → 2N.

This is an energy requiring step, which in biological fixation requires 160 kcal/mole. The actual fixation step, in which two atoms of nitrogen combine with three molecules of H2 to form two molecules of ammonia (NH3) releases 13 kcal/mole. Therefore, the net energy requirement for nitrogen fixation is 147 kcal/mole.


Related Discussions:- Biological fixation - nitrogen fixation

Explain about the ascomycota - fungi, Explain about the Ascomycota - Fungi?...

Explain about the Ascomycota - Fungi? Ascomycota - Ascomycetes or sac-like fungi have septate mycelium. These are called so because sexual reproduction involves the formation o

Vertebrata, VERTEBR A T A It is divided into two parts -        1. ...

VERTEBR A T A It is divided into two parts -        1. Agnetha                    2. Gnetha S.No. C haracter A gnetha G

Define ecosystems science and large-scale ecology, Define Ecosystems scienc...

Define Ecosystems science and large-scale ecology? Many of today's most pressing problems are regional or global in nature including for instance, the effects of land cover and

About ribosome, Which type Ribosome occurs exclusivley in Mitocondria?

Which type Ribosome occurs exclusivley in Mitocondria?

Cross-pollination - types of pollination, Cross-Pollination - Types of Poll...

Cross-Pollination - Types of Pollination In this kind of pollination the pollen from anther of one individual is transferred to the stigma of another individual of the same sp

What is root cap, What is root cap? Root cap is a protective structure ...

What is root cap? Root cap is a protective structure located in the tip of the growing root. It defends the meristematic tissue of the root forming a cap that surrounds the tip

Do all mammals have a placenta, Q. Do all mammals have a placenta? Mamm...

Q. Do all mammals have a placenta? Mammals of the monotreme group (platypus, echidnas) are oviparous egg- laying and they don't have a placenta. Mammals of the marsupial group

Explain about dry heat sterilization, Q. Explain about Dry heat sterilizati...

Q. Explain about Dry heat sterilization? It is used to sterilize glass ware, forceps, scissors, scalpels, all glass syringes, swabs, some pharmaceuticals products such as liqui

Environmental acts and regulations, The environmental pollution has become ...

The environmental pollution has become a biggest threat  to humanity. To over-come this problem a suitable preventive legislation is need of hour. The problems of acid rain ,ozone

Haversian canals and the volkmann canals of the bones, Q. What are the Have...

Q. What are the Haversian canals and the Volkmann's canals of the bones? Is the osseous tissue vascularized? The Haversian canals are longitudinal canals present in the osseous

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd