Sharks and Rays Deal with the Osmotic Stress of Living

question 10

Multiple Choice

Sharks and rays deal with the osmotic stress of living in seawater mainly by ____.

• A) active transport of ions into the body through the gills
• B) excreting nitrogenous wastes through their kidneys as urea
• C) active transport of ions out of the body by chloride cells
• D) excreting excess salt through the actions of specialized salt glands in their heads
• E) maintaining high levels of urea and trimethylamine oxide in body fluids

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Definitions:

Cereal With Milk

A common breakfast food consisting of grains served in a bowl with milk.

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A sequence of physiological changes that the body goes through during sleep, typically lasting about 90 minutes and including stages of light sleep, deep sleep, and REM sleep.

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The experience of imagined images, sounds, or other sensations during sleep, typically occurring in the REM stage.

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A phase of sleep characterized by rapid eye movements, vivid dreaming, and heightened brain activity, essential for emotional regulation and memory consolidation.