Biology
11th Edition
ISBN: 9781259188138
Author: Peter H Raven, George B Johnson Professor, Kenneth A. Mason Dr. Ph.D., Jonathan Losos Dr., Susan Singer
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 50, Problem 4U
An important function of the excretory system is to eliminate excess nitrogen produced by
a. Frog
c. Iguana
b. Freshwater fish
d. Camel
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Which of the following correctly lists the three forms of nitrogenous waste in order from least to most toxic?
A.
uric acid, ammonia, urea
B.
urea, uric acid, ammonia
C.
uric acid, urea, ammonia
D.
urea, ammonia, uric acid
E.
ammonia, urea, uric acid
Urea...
A. Is the least expensive nitrogen end-product to produce
B. Is the least toxic nitrogen end-product
C. Is excreted by diffusion across the body surface or gill of aquatic animals
D. Provides the greatest water savings (in terms of excretion of nitrogen waste products)
E. None of the above
Which of the following is not correct?a. Uric acid is produced from the breakdown of amino acids.b. Creatinine is produced from breakdown reactions in the muscles.c. Urea is the primary nitrogenous waste of humans.d. Ammonia results from the deamination of amino acids.
Chapter 50 Solutions
Biology
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