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

DNA, where does the free nucleotides present in the nucleus come from

where does the free nucleotides present in the nucleus come from

Origin of regeneration cells of blastema, Origin of Regeneration Cells of B...

Origin of Regeneration Cells of Blastema The origin of the cells making the blastema in vertebrates has been investigated by various workers in the case of regenerating legs

Determine the basic seven food groups - nutritions, Determine the Basic Sev...

Determine the Basic Seven Food Groups - Nutritions? These basic seven food groups are: 1) Cereals and cereal products 2) Pulses (also meat and meat products) 3) Milk and m

Smooth muscles, Normal 0 false false false EN-IN X-NO...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

What is lyophobic, What is lyophobic If the affinity of the dispersed p...

What is lyophobic If the affinity of the dispersed phase to go into or to remain in colloidal dispersion is slight, the dispersed phase is said to be lyophobic (solvent repelli

The genetic code within a dna molecule, How is a genetic trait determined b...

How is a genetic trait determined by the genetic code within a DNA molecule? A DNA molecule has 4 dissimilar bases, either CGTA. Any specific combination of these things forms

What is the name of the sea anemones and larva of corals, Q. What is the na...

Q. What is the name of the sea anemones and larva of corals? What is the biological importance of that larval stage? Sexual reproduction in sea anemones and corals have a larva

Zoology, what is the term used for study of sponges,protozoa,colentreta,mol...

what is the term used for study of sponges,protozoa,colentreta,molusca,fish,aves,mammal

What are multiple alleles, What are multiple alleles? Is there dominance in...

What are multiple alleles? Is there dominance in multiple alleles? Multiple alleles is the phenomenon in which the similar gene has more than two dissimilar alleles (in normal

Define overall positive health effect of carbohydrate, Define Overall posit...

Define Overall positive health Effect of Carbohydrate? Non-glyceinic carbohydrates including non-starch polysaccharides are beneficial for the functions and physiology of gastr

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