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

Management of diet for diabetes, Q. Management of Diet for diabetes? Di...

Q. Management of Diet for diabetes? Diet plays a very important role in management of diabetes as it exerts a direct influence on the blood glucose levels. It is one of the vit

Objectives of taxonomy, Q. Objectives of taxonomy? Plants and animals b...

Q. Objectives of taxonomy? Plants and animals both have a great significance and unparalleled impact on human life. Most of our needs are fulfilled with plants such as foodstuf

Are sex-linked diseases associated only to genes, Are sex-linked diseases a...

Are sex-linked diseases associated only to genes of the X chromosome? There are many X-linked diseases, like hemophilia A, hemophilia B and adrenoleukodystrophy, but called as

Define precautions for acid fast staining, Define Precautions for Acid Fast...

Define Precautions for Acid Fast Staining? 1. Do not allow carbol fuchsin to dry on heating. 2. Maintain aseptic conditions. 3. Decolourization should be done till no red

Occlusal load affect osseointegration, Occlusal load affect Osseointegratio...

Occlusal load affect Osseointegration The timing and amount of overload are critical for osseointegration. Occlusal loading early, where the primary stability is low leads to h

What is the most likely genotype of p1, In cats, curled ears (Cu) results f...

In cats, curled ears (Cu) results from an allele that is dominant over an allele for normal ears (cu). Black colour results from an independently assorting allele (G) that is domin

Microorganisms acquired during transport of raw food, Microorganisms Acquir...

Microorganisms Acquired During Transport, Handling and Processing of Raw Foods Microorganisms can come from truck, tanker, food handlers and equipment and utensils used in the

Why could a disease be more serious in a population, Why could a disease be...

Why could a disease be more serious in a population with a low genetic diversity? A population with a low genetic diversity could be more expected to be wiped out by a disease

What are the main divisions and representing species, What are the main div...

What are the main divisions and representing species of the gymnosperms? This group of plants can be divided into conifers (pine, sequoia, cypress), that have flowers known as

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