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

Respiration, what is the organ of respiration in snaks

what is the organ of respiration in snaks

Storage excretion, Storage Excretion Many insects exhibit a phenomenon...

Storage Excretion Many insects exhibit a phenomenon known as storage excretion. If excretory products are stored in the body instead of being eliminated, no water is expended

Describe in brief about the boron - micronutrients, Describe in brief abou...

Describe in brief about the Boron  - Micronutrients  Boron is required in extremely small amounts in the range of 0.01 to 1.0 ppm. The actual amount may vary from crop to crop

Describe coping strategies, Patient and his family have to cope up with a ...

Patient and his family have to cope up with a critical situation when patient has complications and more so when a patient has to be admitted in a hospital and referred. Some patie

Tissues, assignment on tissues

assignment on tissues

Male reproductive disorders-preputial prolapse, Preputial prolapse Thi...

Preputial prolapse This deformity is seen in some of the tropical zebu breeds but is not uncommon in European breeds. Initially, it begins as a temperory eversion of a small p

Life style modification in management of diabetes mellitus, Life style modi...

Life style modification in the management of diabetes mellitus All of us have our own way of living. It becomes a routine when we do things in the same way. But when one falls

Open pulmonary valvotomy-types of surgery, Open Pulmonary Valvotomy :  ...

Open Pulmonary Valvotomy :  Open pulmonary valvotomy by technique of inflow occlusion is done without cardio pulmonary bypass. Surface hypothermia is used and inflow occlusio

Endomitosis, #questwhy and where endomitosis happens?ion..

#questwhy and where endomitosis happens?ion..

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