Guanotelism - excretion, Biology

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.

Posted Date: 1/16/2013 1:07:56 AM | Location : United States







Related Discussions:- Guanotelism - excretion, Assignment Help, Ask Question on Guanotelism - excretion, Get Answer, Expert's Help, Guanotelism - excretion Discussions

Write discussion on Guanotelism - excretion
Your posts are moderated
Related Questions
Antibodies Antibodies are important.tools for detecting and localising specific molecules in the cells due to their high specificity. The first requirement for this is to produ

Define the Prevalence and Incidence of bulimia nervosa? Bulimia nervosa appears to have become more prevalent during the past 30 years. We do not have much data on Indian popul

Determine about the Psychological tests The construct of attention has been found to comprise several interrelated elements that the paediatric neuropsychologist can consider i

What is consanguineal marriage? Why is the appearing of genetic disease more probable in the offspring of a consanguineal marriage? Consanguineal marriage is the marriage among

Explain Procedure for Determination of the Quality of Milk? 1. Prepare methylene blue solution by dissolving 1 mg methylene blue in 250 ml of sterile distilled water. 2. Aft

Define Criteria for Assessment of Vitamin D Status? You may recall the events involved in calcium homeostasis described earlier in this section. We studied that sufficient 25-O

What is the Importance of pantothenic acid One of the active forms of pantothenic acid is coenzyme A, which is involved in numerous metabolic functions. It is involved in t

Nervous System of Asteroidea The nervous system of steroids is not ganglionated and is closely related with epidermis. It consists mainly of a circumoral nerve ring surroundin

Q. Illustrate Spoilage of Milk and Milk Products? Milk is a wholesome food and so it is generally consumed in its basic form or with the addition of a beverage supplement. Mil

STOMACH It is wide, J-shaped, placed obliquely on left side in upper abdominal cavity so left kidney is slightly down ward. It is 30 cm, long and 15 cm. wide. It has g