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 characteristics that make breastfeeding beneficial, Explain charact...

Explain characteristics that make breastfeeding beneficial to the infant? We have listed some characteristics that make breastfeeding beneficial to the infant: • Mature milk

What are the problems regarding terrestrial environment, Q. What are the pr...

Q. What are the problems that vertebrates needed to solve to adapt to the terrestrial environment since they came from the aquatic habitat? How evolution does solve those problems?

Planning and implementation of nursing care-aplastic anaemia, Planning of N...

Planning of Nursing Care     Administer the drugs as prescribed -    Prevent infection    Control bleeding  Implementation of Nursing Care   Administer th

Define the stress response - nutrition during stress, Define the Stress Res...

Define the Stress Response - nutrition during stress? The terms trauma, stress, shock are very often used interchangeably and encompass a variety of conditions such as sepsis

Community change, Community Change Ecosystems are dynamic entities in ...

Community Change Ecosystems are dynamic entities in which a number of events take place. Associated with the biotic communities of the ecosystem are some changes, which may be

Predict the genotypes and phenotypes of the f2, In rats, the gene pigment (...

In rats, the gene pigment (P) is dominant to no pigment (p). The gene for black (B) is dominant to the gene for cream (b). If a pigment gene (P) is absent, genes B and b are inoper

What is surgical therapy, Surgical Therapy The clinician may use a surg...

Surgical Therapy The clinician may use a surgical approach when non-surgical therapies are not indicated or are unsuccessful. The surgical techniques are modified from those

Digestion and feeding mechanism, state 5 notification and feeding habits in...

state 5 notification and feeding habits in some animals

Salivary analyse works on foods, Explain how salivary amylase works on food...

Explain how salivary amylase works on foods like crackers

Zoology, explain in detail various types of epithelial tissue

explain in detail various types of epithelial tissue

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