We have seen that some amino acids are utilized by the animal organism as detoxication agents and that products like benzoyl-glycine (hippuric acid) or phenyl-acetyl-glutamine can be found in urine. We will also see that urobilin and stercobilin, the degradation products of hemoglobin (see fig. 7-33), are present in faeces. But generally, nitrogen is eliminated in 3 forms: 1. Ammonia [...]
In this article we will discuss about:- 1. Meaning of Essential Elements 2. Sources of Essential Elements for Plants 3. Role 4. Deficiency Symptoms. Meaning of Essential Elements: An essential element is known, without which the plant cannot complete its life cycle. It has clear physiological role to play. The important criteria for an essential element are as follows: (i) [...]
In this article we will discuss about the incorporation of ammonia into organic compounds. Nitrogen is an essential element for all living organisms and also viruses, coming next in importance to carbon. Nitrogen forms about 14% of the dry weight of the living matter, where it is primarily present as a constituent of proteins and nucleic acids. Although molecular nitrogen [...]