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

Explain covalent structure of rna, Like  DNA RNA  is  a  long  polymer  hav...

Like  DNA RNA  is  a  long  polymer  having  of  nucleotides joined by 3'5' phosphodiester  bonds. Furthermore, there are some differences: ?   The bases in RNA are adenine abbr

Chordata.., write the classification of chordata?

write the classification of chordata?

Explain dehydration, Explain Dehydration Dehydration is one of the anc...

Explain Dehydration Dehydration is one of the ancient food processing techniques.  Dehydration means to completely remove water under controlled  conditions, in such a way

Total darkness and pea seedlings grown in the light, What differences would...

What differences would you expect to see among pea seedlings grown for 10 days in total darkness and pea seedlings grown in the light for the similar period of time?   The s

State about the halsted reitan battery, State about the Halsted Reitan batt...

State about the Halsted Reitan battery The Halsted Reitan battery, as the procedure came to be known over the years, also has a history. It has been described as a fixed batter

Vascular cambium, Vascular Cambium The vascular cambium usually, if no...

Vascular Cambium The vascular cambium usually, if not always, has a dual origin within the primary tissues; from provascular strands, and from the "ground" meristem tissues be

Importance of inherited characteristics in their explanation, QUESTION ...

QUESTION Behaviourists underestimate the importance of biological factors such as the inherited factors, by emphasizing the simple approach of Stimulus-Response to explain beha

How much fluids should be taken for management of obesity, How much Fluids ...

How much Fluids should be taken for management of obesity? Liberal amounts of water and zero/low calorie fluids may be included in the diet. It may be helpful to have a glass o

Explain the properties of gum tragacanth, Explain the Properties of Gum tra...

Explain the Properties of Gum tragacanth Gum tragacanth swells in water to give thick  viscosity dispersions or pastes similar in texture to soft gels. The viscosity shows a sh

The hybridization reaction, As double-stranded DNA is heated a temperature ...

As double-stranded DNA is heated a temperature is reached at that the two reaction strands divided.  This procedure is called as denaturation.  The temperature at that half of the

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