11 Questions
What is the primary function of osmoregulation in the body?
To regulate water and ion balance
Which of the following statements is true about osmoconformers?
They are typically found in marine invertebrates
What is the term for the movement of water from a region of higher osmolarity to a region of lower osmolarity?
Osmosis
What is the purpose of excretion in the body?
To eliminate metabolic wastes and maintain water balance
Which type of animal would be most likely to discharge water in a hypotonic environment?
Osmoregulator
What is the term for the solute concentration of a solution, expressed in milliosmoles per liter?
Osmolarity
Which nitrogenous waste product requires the most water to excrete?
Ammonia
What is a characteristic of urea production?
It is formed by combining ammonia with bicarbonate ion
Which of the following is a characteristic of uric acid?
It is relatively nontoxic
What is a difference between urea and ammonia?
Urea is less toxic than ammonia
Which group of organisms excretes ammonia as their primary nitrogenous waste product?
Aquatic invertebrates, teleosts, and larval amphibians
Test your understanding of key terms related to the regulation of body fluids, including internal environment, osmolarity, osmosis, and osmoregulation. Review the definitions and concepts that govern the balance of body fluids.
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