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.
GASTRO-INTESTINA L MUCOSA - It develops from the endoderm of the embryo. Inner most layer of the wall of the alimentary canal is called mucosa. Certain cells of the mucosa
Q. Where are the adrenal glands located? How many are they and what are their portions? Each adrenal gland is located on the top of each kidney (forming a hat-like structure fo
What happens to transcription at the lac operon when lactose is absent and why? What happens to transcription at the lac operon when lactose is present and why? What happens
Caseous lymphadenitis Caseous lymphadenitis is a chronic disease of sheep and goats. It is characterized by abscess formation in lymph nodes and sometimes in lungs and other organ
Anaplasia - Characteristics Define Cancer Anaplasia is a structural abnormality where cells resemble primitive or embryonic tissue in which adult functions are diminished or t
Observing the development of flowers into fruit Collect specimens of flowers in dissimilar stages of maturity from newly opened buds to specimens in which the petals have falle
Species Diversity Species diversity means the differences between species (both domesticate d and wild). It is the most visible component of biodiversity as implied by the word
What is the term for the pattern of base pairing between one DNA strand and its partner in a duplex?
Q. What is Intermediate acting insulin? Intermediate acting: This type works more slowly than short acting. It works hardest 8-12 hours after injection and still keeps on worki
Rigs Pattern: The nursing unit has been divided into small cubicles for 1,2,4 and 6 beds. The beds are arranged parallel to the longitudinal wall. The pattern was first bu
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: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd