Which Strategies Would a Seawater Fish with an Internal Osmolarity

question 25

Multiple Choice

Which strategies would a seawater fish with an internal osmolarity of 320mOsm/L living in a marine environment of 1010mOsm/L utilize to maintain internal ion and water homeostasis?

• A)produce copious amounts of dilute urine
• B)drink seawater and actively excrete salts out of their bodies across the gills
• C)don't drink seawater and actively transport salts into their bodies at the kidneys
• D)drink seawater and actively transport salts into their bodies at the gills
• E)All of the choices for this question are correct.

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Definitions:

Weakened Immune System

A reduced ability of the immune system to fight infections and diseases, which can be caused by a variety of factors including stress, disease, or malnutrition.

General Adaptation Syndrome

A model describing the body's short-term and long-term reactions to stress, characterized by three stages: alarm, resistance, and exhaustion.

Corticotropin-Releasing Hormone

A hormone secreted by the hypothalamus that stimulates the release of adrenocorticotropic hormone (ACTH) from the pituitary gland, playing a key role in the stress response.

Central Nervous System

The part of the nervous system consisting of the brain and spinal cord, responsible for integrating sensory information and responding accordingly.