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

Find the magnitude of the acceleration of the proton, A proton accelerates ...

A proton accelerates from rest in a uniform electric field of 650 N/C. At some later time, its speed is 1.3 106 m/s. (a) Find the magnitude of the acceleration of the proton. m/s2

Gram positive & gram negative bacteria , What is the difference among Gram ...

What is the difference among Gram positive & Gram negative bacteria based on cell content? Ans) The cell membrane is made if more of lipoproteins in gram negative compared to gr

Describe dextran , Dextran is a glucose polymer where the glucose re...

Dextran is a glucose polymer where the glucose residues are mainly related by α1-6 bonds. Moreover, a few branches also happen. These are classically formed by α1-2, α1-3 or α1-4 b

Climax stage - hydrarch, Climax Stage - Hydrarch A variety of trees in...

Climax Stage - Hydrarch A variety of trees invade the woodland community which soon develop into the climax community. The nature of the climax is dependent upon the climate o

Explain some characteristic features of mucor, Explain some Characteristic ...

Explain some Characteristic Features of Mucor? 1. Stolons characteristics of Rhizopus are absent in Mucor. The aerial mycelium in Mucor consists of branched hyphae, which grow

What is the fact of molecular biology, What is the fact of Molecular Biolog...

What is the fact of Molecular Biology on which DNA fingerprint is based? DNA fingerprint, the method of individual identification using DNA, is based on the fact that the DNA o

Phylum protozoa, what are the classfication and members af phylum protozoa

what are the classfication and members af phylum protozoa

Common endocrine disorders, COMMON ENDOCRINE DISORDERS: We  shall  foc...

COMMON ENDOCRINE DISORDERS: We  shall  focus on  two conditions Diabetes mellitus and Diabetes inspidus.  Diabetes Mellitus  Diabetes mellitus (DM) is a disorder of gl

Addition of glycine to the physiological saline, Addition of glycine to the...

Addition of glycine to the physiological saline A complete motor neuron is removed from a frog and placed in a large volume of normal physiological saline.  The neuron is heal

Explain about the connecting models and data, Explain about the Connecting ...

Explain about the Connecting models and data? Perhaps the most dramatic change in quantitative environmental biology in recent years has been the burgeoning progress in the dir

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