Birds secrete uric acid as their nitrogenous waste because uric acid _____
A) is readily soluble in water
B) is metabolically less expensive to synthesize than other excretory products
C) requires little water for nitrogenous waste disposal, thus reducing body mass
D) can be reused by birds as a protein source
C
You might also like to view...
An individual is constipated. They take magnesium salts to help loosen the stool. Why does this work? A. Water moves from the intestines to the blood because the blood is hypertonic B. Water moves from the intestines to the blood because the blood is hypotonic
C. Water moves from the blood to the intestines because the blood is hypertonic D. Water moves from the blood to the intestines because the blood is hypotonic.
Which of the following is a disadvantage of sexual reproduction?
a. It produces genetically diverse offspring. b. Large numbers of offspring can be produced quickly. c. Only half the population can produce offspring. d. Organisms have both male and female reproductive systems.
Reef systems
a. are seriously threatened ecosystems. b. are formed from calcium carbonate secreted by coral polyps. c. have symbiotic dinoflagellates in the living coral. d. have shown widespread bleaching; death of corals is being reported worldwide. e. include all of these
Which contraceptive approach is least effective?
A. Abstinence B. Tubal ligation C. Vasectomy D. Hormonal implant E. Rhythm method