Freshwater Fish Reside in Hypotonic Environments

question 17

Multiple Choice

Freshwater fish reside in hypotonic environments. They do not drink water, and they excrete large volumes of hypotonic urine in an effort to osmoregulate. How do they obtain an adequate supply of electrolytes?

• A) The rectal gland is specialized to produce the dilute (hypotonic) urine and conserve ions.
• B) Chloride cells in the gut transport additional electrolytes into the circulation of these organisms.
• C) Chloride cells on the gill filaments take up additional electrolytes from freshwater.
• D) There is an increase in Na+/K+-ATPase activity across the basolateral membrane.

---

Definitions:

White Supremacy

The belief in the superiority of white people and the societal structures that support this ideology.

Slave Trafficking

The illegal buying, transporting, and selling of human beings for the purpose of forced labor or sexual exploitation.

Barbados

An island country in the Lesser Antilles of the West Indies, known for its beaches, Creole culture, and as a historical site of the sugar plantation economy.

West African Culture

Refers to the diverse cultural practices, traditions, languages, and history of the people in West Africa, with a rich heritage that includes art, music, religion, and social norms.