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

Lamellar models, LAMELLA R MODELS According to James Danielly & Hu...

LAMELLA R MODELS According to James Danielly & Hugh Davson (1935) cell membrane consists of 4 layers P-L-L-P. Molecules of phospholipid has amphipathic nature, i.e. it

Simple proteins, SIMPL E PROTEINS The proteins are made of amino acids...

SIMPL E PROTEINS The proteins are made of amino acids only. Additional chemicals are absent. These are of two types -    (i) Fibrous        (ii) Globular ( i )

ECOLOGICAL PYRAMIDS, Ask questionLIMITATION OF ECOLOGICAL PYRAMIDS #Minimu...

Ask questionLIMITATION OF ECOLOGICAL PYRAMIDS #Minimum 100 words accepted#

Explain lipase, Lipase Pancreatic lipase specifically  hydrolyses the p...

Lipase Pancreatic lipase specifically  hydrolyses the primary ester linkages i.e.  at the position 1 and 3 of triacylglycerols. The presence of bile salt helps  in  emulsificat

What are the main sources of mercury pollution, What are the environmental ...

What are the environmental harms caused by mercury pollution? What are the main sources of mercury pollution? Mercury is a metal that when present in the water of lakes, river

Investigation of tricuspid regurgitation by echo doppler, Q. Investigation ...

Q. Investigation of Tricuspid regurgitation by Echo Doppler? Investigations ECG in secondary TR shows evidence of right atrial overload and right ventricular hypertrophy

Explain functional property of foaming, Normal 0 false false ...

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

What is coronary disease, What is coronary disease? Coronary disease, o...

What is coronary disease? Coronary disease, or coronary insufficiency, is a disease in which there is total or partial obstruction of one or more of the arteries that irrigate

Cell division, What is telokinesis and how is it different in animal then p...

What is telokinesis and how is it different in animal then plant cells?

Reciprocal crosses , RECIPROCAL CROSSES Similar results were obtained w...

RECIPROCAL CROSSES Similar results were obtained with reciprocal crosses also. A reciprocal crosses involves the same traits but carried by sexes opposite to those in the origi

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