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

Gene therapy vectors, The ultimate aim of somatic gene therapy is to alter ...

The ultimate aim of somatic gene therapy is to alter the genetic material of living cells which involves transfer of DNA. Genetic material is transferred by various methods like us

Explain genetic algorithms, Your task is to describe genetic algorithms, ex...

Your task is to describe genetic algorithms, explain why genetic algorithms are useful in solving the problem you have been set and conduct an investigation into the optimum parame

What is the structural depiction of a carboxyl group, Q. What is the struct...

Q. What is the structural depiction of a carboxyl group? Carboxyl groups have a carbon attached to one hydroxyl group by a simple bond and one oxygen by a double bond. The othe

What is the patients rbc volume, Tina administered 1 liter of sterile disti...

Tina administered 1 liter of sterile distilled water IV to a patient. Predict the direction (increase, decrease, no change) you would expect Tina's infusion to have produced in the

Advantages of vegetative propagation, Advantages of vegetative propagation ...

Advantages of vegetative propagation Vegetative propagation helps to maintain fixed qualities and characteristic features of the parent plant. For Example in ornamental p

What is the phenotype, What is the phenotype? Phenotype is every observ...

What is the phenotype? Phenotype is every observable characteristic of a living being conditioned by its genes. A few phenotypes may be altered by nongenetic factors (for insta

What are some of the things scientists may do analyze data, What are some o...

What are some of the things scientists may do to analyze data? They may use statistics to determine relation- ships among variables, compare the data with those obtained in ot

Why do sharks need to agitate their body to swim, Q. How different are the ...

Q. How different are the swimming strategies in chondrichthyes and in osteichthyes? Why do sharks need to agitate their body to swim while bony fishes do not? Bony fishes have

Sigmoid growth curve, GROWT H CURVES - S-shaped or sigmoid - Desc...

GROWT H CURVES - S-shaped or sigmoid - Described by Verhuhst in 1839. It shows 5 phases - (i) Lag phase (ii) Positive acceleration phase (iii) Exponent

Define use of isotopically labelled nutrients, Define Use of Isotopically L...

Define Use of Isotopically Labelled Nutrients? Nutrient Turnover Radioactive labelled nutrients are used to know the total body pool and the compartment in which it is stored.

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