Nitrogen Cycle

With the help of a labelled diagram show (a) Nitrogen cycle in nature (b) Describe briefly any two processes involved in the cycling of N_(2) in the environment. OR With the help of a labelled diagram show the cycling of carbon in nature. What are the two ways in which carbon dioxide is fixed in the environment.

Read the following statements and select the incorrect ones. (i). The co-cordinated activites of the legume and Rhizobium bacteria depend on chemical interations between the symbiotic partners. (ii). Leguminous roots secrete chemical attractants that attract Rhizobium bacteria living nearby. (iii). N,P and K usually do not get dificint in soil due to their low plant requirement (iv). Nitrogen cycle is regular circulation of nitrogen amongst oliving organisms with its reservoir pool in lithosphere and cycling pool in atmosphere.

The process of nitrogen cycling by microbes involves multiple steps of oxidation and simultaneous reduction. The following reaction occurring during one such step is brought about by which bacteria? 2NO_2^- + O_2 to 2NO_3^_

Nitrogen byproduct of ornithine cycle is found minimally in

Metabolism OF nitrogen||N2 cycle||N2 fixation ||Biological N2 fixers

In carbon-Nitrogen fusion cycle, protons are fused to from a helium nucleus, positrons and release some energy. The number of protons fused and the number of positrons released in this process respectively are

A 5-carbon compound from krebs' cycle is an important compound in nitrogen merabolism.It is a

Energy is released from stars due to nuclear fusion taking place in two cycles proton-proton cycle and carbon nitrogen cycle. In these cycles four hydrogen nuclei combine to from helium nucleus. In this fusion reaction in addition to energy how many number of nutrinous are released ?

The overall process of carbon nitrogen fusion cycle results in the fission of 4 protons to yield helium nucleus and_____