Bio 121 Campbell Biology Truman College
17th Edition
ISBN: 9781323670637
Author: Urry, Cain
Publisher: PEARSON
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Chapter 44, Problem 6TYU
Summary Introduction
Introduction: The different animal species excrete nitrogenous waste in different forms. The nitrogenous waste can be excreted in three different forms, namely ammonia, urea and uric acid.
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Why is ammonia not used as a nitrogenous waste compound in terrestrial animals?
a)Ammonia is highly toxic, and to minimize that toxicity it must be excreted in large volumes of water.
b)Urea and uric acid both have more nitrogen atoms than ammonia, making them more efficient at
c)Ammonia is used by reptiles and birds, because it is less toxic to developing embryos than urea.
d)Ammonia has more free energy than urea, so ammonia waste is converted to urea to capture some of that free energy.
A drug which prevents uric acid synthesis
by inhibiting the enzyme xanthine
oxidase is
(A) Aspirin
(C) Colchicine
(B) Allopurinol
(D) Probenecid
The advantage of excreting wastes as urea rather than as ammonia is that
A)urea can be exchanged for Na+.
B)less nitrogen is removed from the body.
C)urea elimination does not affect the osmolar gradient.
D)urea requires less water for excretion than ammonia.
E)urea is more toxic than ammonia so the animal can get rid of toxic substances easier.
Chapter 44 Solutions
Bio 121 Campbell Biology Truman College
Ch. 44.1 - The movement of salt from the surrounding water to...Ch. 44.1 - Prob. 2CCCh. 44.1 - WHAT IF? Researchers found that a camel in the...Ch. 44.2 - What advantage does uric acid offer as a...Ch. 44.2 - Prob. 2CCCh. 44.3 - Prob. 1CCCh. 44.3 - Where and how does filtrate originate in the...Ch. 44.3 - Prob. 3CCCh. 44.4 - What do the number and length of nephrons in a...Ch. 44.4 - Many medications make the epithelium of the...
Ch. 44.4 - Prob. 3CCCh. 44.5 - How does alcohol affect regulation of water...Ch. 44.5 - Prob. 2CCCh. 44.5 - Prob. 3CCCh. 44 - Prob. 44.1CRCh. 44 - DRAW IT Construct a table summarizing the three...Ch. 44 - Prob. 44.3CRCh. 44 - Prob. 44.4CRCh. 44 - Why can only some patients with diabetes insipidus...Ch. 44 - Prob. 1TYUCh. 44 - Prob. 2TYUCh. 44 - Prob. 3TYUCh. 44 - The high osmolality of the renal medulla is...Ch. 44 - In which of the following species should natural...Ch. 44 - Prob. 6TYUCh. 44 - Prob. 7TYUCh. 44 - Prob. 8TYUCh. 44 - SCIENTIFIC INQUIRY You are exploring kidney...Ch. 44 - Prob. 10TYUCh. 44 - SYNTHESIZE YOUR KNOWLEDGE The marine iguana...
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