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

Why low ca++ in the body fluid cause in body, Low Ca ++ in the body fluid ...

Low Ca ++ in the body fluid may be the cause of: 1.  Tetany 2. Anaemia 3. Angina pectoris 4. Gout  Tetany cause low ca ++

Demography, DEMOGRAPH Y - Scientific study of vital & social statistic...

DEMOGRAPH Y - Scientific study of vital & social statistics such as births, deaths, disease etc. of human population is called demography. It deals with - 1.      Change

Define the objectives to learn about the food processing, Define the Object...

Define the Objectives to learn about the food processing? After studying this unit, you will be able to: Discuss the concepts and aims of food processing Describe t

Adhesion of cells to extracellular cell matrix, Adhesion of Cells to Extrac...

Adhesion of Cells to Extracellular Cell Matrix You know that the cells in order to move or change shape, adhere to each other or to the substratum in their environment. Usual

Wellness & fittness, what is the population for percentage of people being ...

what is the population for percentage of people being overweight

What are the animal pole and the vegetal pole of egg, Q. What are the anima...

Q. What are the animal pole and the vegetal pole of the vertebrate egg? The animal pole of a telolecithal egg is the portion of the egg with little vitellus it is opposite to t

Which aqueous solution has the lowest ph, The aqueous solution with the low...

The aqueous solution with the lowest pH is: Select one: a. 0.01 M HCl. b. 0.1 M acetic acid (pKa = 4.86). c. 0.1 M formic acid (pKa = 3.75). d. 0.1 M HCl. e. 10 t

Explain about the term - paediatric neuropsychologist, Explain about the te...

Explain about the term - paediatric neuropsychologist In the evaluation of infants and young children, all sources of reliable and valid data available to the paediatric neurop

Protozoans, what are vhrmful effects of protozoans

what are vhrmful effects of protozoans

State the types of bone density, State the types of bone density Misch ...

State the types of bone density Misch classified bone density into following types (1988) D1. Dense cortical bone- which is almost never observed in maxilla and approximatel

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