Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Biochemical Reactions - Nitrate Assimilation
Nitrate is the most readily available and preferred source of nitrogen for growth. Assimilatory reduction of NO-3 to NH3 is known to occur in two steps as shown below:
The first step is catalysed by nitrate reductase (NR) which reduces NO-3 to NO-2 at the expense of two electrons. The second step is catalysed by nitrite reductase which - converts NO-2 into NH3 at the expense of six electrons. Nitrate reductase is Mo-enzyme like dinitrogenase and nitrite reductase is Fe-protein. The physiological source of reductant for the two reductive processes could be reduced ferredoxin - Fd(red) or reduced pyridine nucleotides (NADH or NADPH) depending upon the system. It is important to point out here that NO-3 is known to undergo dissimilation in which it is reduced to N2 gas. Such a process of nitrate metabolism is called nitrate respiration or denitrification and occurs exclusively in certain bacterial forms under anaerobic condition. The enzymes of denitrification of nitrate are called dissimilatory nitrate reductases.
Q. What is protocooperation? The Protocooperation is the ecological interaction in which both participants benefit but which is not obligatory for their survival. The Protocoop
Clinical Manifestation Occurs over an extended time period and mimic those of CHF and corpulmonale. Dyspnea on exertion, dependent odema, ascitis, fatigue, anorexia and weight
What is eutrophication? Eutrophication is the process of excessive enhancing of nutrients, like phosphate and nitrate, in water because of direct deposit of non treated sewage.
Q. How is it structurally explained that the motor activity of the left side of the body is controlled by the right cerebral hemisphere and the motor activity of the right side of
Define Requirements for underwater weighing method? • The equipment required to perform hydrostatic measurements is bulky and maintenance intense. • A large tank of water, usu
The lithosphere contains all of the hard solid land of the earth crust and the semisolid land underneath the crust. The surface of the lithosphere is very uneven contains high moun
BIOLOGY - A SCIENCE OF EXCEPTION - Some common examples to prove it are - 1. Embryos of dicot plants have 2 cotyledons but in cuscuta (Dodder plant or amer bel or Aka
Define Nutritional and metabolic factors that contribute to the malnutrition of CHD? Nutritional and metabolic factors that contribute to the malnutrition of CHD infant are ele
What classifies an animal into the Echinodermata phylum?
Determine the Goal of a BCC Programme The overall goal of BCC programs for diabetes mellitus is to promote behaviors that control blood sugar and prevent complications. Thes
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd