The Osmoregulatory Process Called Secretion Refers to the

question 15

Multiple Choice

The osmoregulatory process called secretion refers to the

• A) formation of filtrate at an excretory structure.
• B) reabsorption of nutrients from a filtrate.
• C) selective elimination of excess ions and toxins from body fluids.
• D) formation of an osmotic gradient along an excretory structure.
• E) expulsion of urine from the body.

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Definitions:

Marginal Social Cost

The cost to society of producing one additional unit of a good or service, incorporating both the private costs and any external costs.

Consumer Surplus

The gap observed between the consumer's desired price for a good or service and the price that is actually paid.

Marginal Benefit

The extra benefit or pleasure that someone receives from using an additional unit of a specific good or service.

Marginal Cost

The increase in cost resulting from the production of one additional unit of a good or service.