Guanotelism - excretion, Biology

Assignment Help:

Guanotelism - Excretion

Arachnids (spiders and scorpions) excrete mostly guanine and hence are said to be guanotelic. Guanine, like uric acid, is relatively non-toxic and insoluble and is excreted in solid form. It is an adaptation to life in arid habitats. It is also a purine and has the same atoms in its ring structure as in uric acid.

In fact, guanine is formed as an intermediate during uric acid synthesis in uricotelic animals. In spiders and scorpions, the inosinic acid pathway terminates in guanine formation. The origin of the four nitrogen atoms of guanine is similar to that of uric acid.


Related Discussions:- Guanotelism - excretion

Illustrate thallium scintigraphy, Q. Illustrate Thallium Scintigraphy? ...

Q. Illustrate Thallium Scintigraphy? It is often done with SPECT (single photon emission computed tomography) which further increases the sensitivity. However, a stress test w

Effects of insulin on carbohydrate metabolism, Insulin promotes muscle gluc...

Insulin promotes muscle glucose uptake and metabolism. In presence of insulin muscle cells take up glucose and use it as a source of energy. Insulin also promotes storage of insuli

Diagrammatic representation of implant placement, Diagrammatic representati...

Diagrammatic representation of Implant placement Implant placementIt is located directly apical to the tooth it is replacing and not in an embrasure space. The angulati

Show the principle parts of a mold, Q. Show the principle parts of a mold? ...

Q. Show the principle parts of a mold? The principle parts of a mold are a web-like structure known as mycelium and the spore. The mycelium is often white and cottony and penet

Define body weight as a determinant of nutrient requirements, Define Body w...

Define Body weight as a determinant of nutrient requirements? Requirements are considered to be a function of body weight for individuals who are not overweight. However, for s

Explain the shear or moment diagrams, Explain the Shear or Moment Diagrams ...

Explain the Shear or Moment Diagrams Shear diagram changes by magnitude of the load. Shear is constant along unloaded portions of a beam For a point load, the she

Nursing care of common cold, Nursing Care of Common Cold: Relieve Nas...

Nursing Care of Common Cold: Relieve Nasal Congestion Clean the nasal passage to remove secretions. In  infants nasal aspirator can be used while  the older children can

Uses of microbes in industry-amino acids and vitamins, Normal 0 ...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Define about aliphatic alcohols - non glyceride fractions, Define about Ali...

Define about Aliphatic alcohols - Non Glyceride Fractions? These are water-insoluble, with their content varying from 0.5-7% of the unsaponifiable matter. Rice bran oil contain

What type of light-sensitive cell is present in this region, a) Which regio...

a) Which region of the retina gives the most accurate interpretation of the image? b) What type of light-sensitive cell is present in this region?   (a) The fove

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