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

What are abiotic factors?, What are abiotic factors? The Abiotic factor...

What are abiotic factors? The Abiotic factors are the nonliving elements that constitute a given environment, like light, temperature, water, minerals, gases, atmospheric press

Non-striated or smooth muscles, NONSTRIATED (= SMOOTH) MUSCLES - Non...

NONSTRIATED (= SMOOTH) MUSCLES - Non-striated muscles are found in the posterior part of oesophagus, stomach, intestine, lungs, urinogenital tract, urinary bladder, blood ve

What are heterotrophic beings, What are autotrophic beings? What are hetero...

What are autotrophic beings? What are heterotrophic beings? Autotrophic beings are those that can make their own food, i.e., that make organic material from inorganic compound

Determine the parts consists in our urinary system, Determine the parts con...

Determine the parts consists in Our urinary system Our urinary system consists of following:  Two kidneys  Two ureters  One urinary bladder  One urethra Apart fr

Photosynthesis, explain the role of photophosphorylation and chemiosmosis i...

explain the role of photophosphorylation and chemiosmosis in photosynthesis

Zinc (zn) - micronutrients, Zinc (Zn) - Micronutrients In its function...

Zinc (Zn) - Micronutrients In its function in some enzyme systems, zn 2+ resembles Mn 2+ in that it brings about substrate binding and conformational changes in enzymes. A n

Determine the syndrome of listeriosis, Determine the Syndrome of Listerios...

Determine the Syndrome of Listeriosis Syndrome: Listeriosis in humans is not characterized by a unique set of symptoms since the course of the disease depends upon the state

Extensive factor of luria nebraska procedure, Extensive factor of Luria Neb...

Extensive factor of Luria Nebraska procedure Extensive factor analytic studies have been accomplished, and the factor structure of each of the major scales has been recognized.

ECOLOGICAL PYRAMIDS, Ask questionLIMITATION OF ECOLOGICAL PYRAMIDS #Minimu...

Ask questionLIMITATION OF ECOLOGICAL PYRAMIDS #Minimum 100 words accepted#

What are the genotype and phenotype, For Dalmation dog, the spotted conditi...

For Dalmation dog, the spotted condition is dominant to non-spotted. a) Using a Punnet square, show a cross between two heterozygous parents. b) A spotted female Dalmation dog is m

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