Concept explainers
(a)
Interpretation:
The events that trigger the initial surge of nitrogen excretion must be determined.
Concept introduction:
Animals excrete various nitrogenous waste products from the body. The nitrogenous waste can be in the form of ammonia, uric acid, and urea. The availability of water in the body determines the mode of nitrogen excretion. In general, aquatic animals excrete ammonia, while terrestrial animals excrete uric acid and urea.
(b)
Interpretation:
The reason for the fall of nitrogen excretion after several weeks of fasting should be determined.
Concept introduction:
Animals excrete various nitrogenous waste products from the body. The nitrogenous waste can be in the form of ammonia, uric acid, and urea. The availability of water in the body determines the mode of nitrogen excretion. In general, aquatic animals excrete ammonia, while terrestrial animals excrete uric acid and urea.
(c)
Interpretation:
The reason for increase in nitrogen excretion after the depletion of lipid stores should be determined.
Concept introduction:
Animals excrete various nitrogenous waste products from the body. The nitrogenous waste can be in the form of ammonia, uric acid, and urea. The availability of water in the body determines the mode of nitrogen excretion. In general, aquatic animals excrete ammonia, while terrestrial animals excrete uric acid and urea.
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- Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning