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

Bioluminescence, #question.which annelids shws bioluminescence .

#question.which annelids shws bioluminescence .

Explain changes in gastrointestinal tract of infants, Explain changes in ga...

Explain changes in gastrointestinal tract of infants? A full term baby has the ability to digest simple proteins, carbohydrates and emulsified fats. In first 3-4 months, the p

Explain about stacking faults, Explain about Stacking faults Stacking ...

Explain about Stacking faults Stacking faults happen in a number of crystal structures, but the common example is in close-packed structures.  Face-centered cubic (fcc) struct

Traumatic reticuloperitonitis (trp), Tr aumatic reticuloperitonitis (TRP) ...

Tr aumatic reticuloperitonitis (TRP) It is also known as traumatic gastritis, hardware disease or traumatic reticulitis. Et i o l o g y : Frequentl

Describe about the term - bacterial infections, Describe about the term - B...

Describe about the term - Bacterial Infections Bacterium is a loose generic name for any microorganism (typically one celled) that has no chlorophyll and multiplies by simple d

Why is the amazon rainforest under risk of desertification, Q. Despite havi...

Q. Despite having a great biodiversity why is the Amazon Rainforest under risk of desertification? The natural soil of the Amazon Rainforest isn't very fertile but it is enrich

Dna structure, A)Which of the following statements about DNA structure is t...

A)Which of the following statements about DNA structure is true? 1.The nucleic acid strands in a DNA molecule are oriented ant parallel to each other, meaning they run in opposite

Determine the prosthodontic considerations, Prosthodontic considerations ...

Prosthodontic considerations In order to achieve good results, understated features should always be examinated. 1. Smile Line: A high smile line increases the esthetic

Hermaphroditism, Hermaphroditism You would have completely appreciated...

Hermaphroditism You would have completely appreciated now that sexual reproduction is definitely the more advanced type of reproduction. It gives for combination of genes from

Shortness of breath, Shortness of Breath It is a subjective sensation...

Shortness of Breath It is a subjective sensation of being unable too draw in enough air to breathe. Most often, this is associated with congestive cardiac failure and may

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