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

Explain about podophyllum, Q. Explain about Podophyllum? These species ...

Q. Explain about Podophyllum? These species were long used by indigenous people in Americea and Asia, including for the treatment of skin cancers and warts. The combination of

Explain sedationin details, Explain Sedationin details? Intubation and ...

Explain Sedationin details? Intubation and mechanical ventilation is associated with a significant degree of discomfort. In addition, many of the procedures done routinely in I

What is class polychetae - marine worms, What is Class Polychetae - Marine ...

What is Class Polychetae - Marine Worms? The polychaetes differ from the oligochaetes in several ways. The name itself suggests one of the differences. The prefix "poly" means

History of psychiatric nursing, History of Psychiatric Nursing: In 187...

History of Psychiatric Nursing: In 1873, Linda Richards, developed better nursing care in psychiatric hospitals, and organized nursing services and educational programmes  in

Plant reproduction, How does being able to reproduce asexually benefit the ...

How does being able to reproduce asexually benefit the plant?

Water movement through the integument, Normal 0 false false ...

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

Functions of protein, FUNCTION S OF PROTEIN Proteins from the collo...

FUNCTION S OF PROTEIN Proteins from the colloidal complex of the protoplasm and its organelles. Most Abundant Protein in Organic World is RUBISCO or Ribulose biphosp

Explain prophylaxis with antimicrobial, Explain Prophylaxis with antimicrob...

Explain Prophylaxis with antimicrobial Prophylaxis with antimicrobials has decreased the incidence of surgical site infection after head and neck operations that involve an inc

Neo-lamarckism, NEO-LAMARCKISM Modem modified form of Lamarck theory...

NEO-LAMARCKISM Modem modified form of Lamarck theory is regarded as Neo-Lamarckism. Mc Dougall (1938) found that time taken for training the mice was reducing gradually

Defition of soap, what SOAP is: Subjective - The data includes informa...

what SOAP is: Subjective - The data includes information obtained from the patient or the patient's family regarding the problem. Objective dat a - the data is gathered  f

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