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

Branchiostoma, What is the feeding habitat of branchiostoma?

What is the feeding habitat of branchiostoma?

Explain the properties or characteristics of dietary fibre, Explain the pro...

Explain the properties or characteristics of dietary fibre? Significant properties / characteristics of dietary fibre that affects its role are: 1) Solubility in water 2)

Fracture and its various types, Fracture - It is a break of a bone. Bone f...

Fracture - It is a break of a bone. Bone fracture are of many types - (i) Green stick fracture - It is merely a crack, the bone remains partly intact. (ii )     Sim

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

Illustrate about the chemical disinfection, Illustrate about the Chemical d...

Illustrate about the Chemical disinfection Sharp waste may cause injury and person may have diseases like Hepatitis B, Cand HIV/AIDS. Therefore it is important for to understa

What is genetic mapping, How can the concept of recombination frequency be ...

How can the concept of recombination frequency be used in genetic mapping? Genetic mapping is the determination of the location of the genes in a chromosome. By determining

Disorders of gonads, DISORDER S OF THE GONADS Hypogonadism. Inadequa...

DISORDER S OF THE GONADS Hypogonadism. Inadequate gonadal function is called hypogonadism. It is due to defects in, or injury to the hypothalamus, the pituitary gland, of th

Measures to control of noise pollution, 1.      Noise producing industries,...

1.      Noise producing industries, railway stations, and aerodromes should be located away from the residential areas. 2.      Check on the traffic in the residential colonies.

Name diseases caused by viruses, Name three diseases caused by viruses. ...

Name three diseases caused by viruses. There are many diseases caused by virus. Virus diseases include colds, influenza, herpes, mumps, measles, chicken pox, rubella, hepati

Characteristic features of avian gastrulation, Characteristic Features of A...

Characteristic Features of Avian Gastrulation Creation of hypoblast and its important role in formation of the axis and orientation of embryo. Existence of the cells

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