A Dialysis Membrane Is Selectively Permeable, and Substances Smaller Than

question 12

Multiple Choice

A dialysis membrane is selectively permeable, and substances smaller than proteins are able to pass through. The dialysis machine allows blood to flow past one side of the dialysis membrane and the dialysis fluid flows on the other side of the membrane. If you wanted to use a dialysis machine to remove only urea (a small molecule) from blood, what could you use for the dialysis fluid?

• A) a solution that is isotonic and contains only protein
• B) a solution that is isotonic and contains the same concentration of substances as blood, except for having no urea in it
• C) distilled water
• D) whole blood
• E) hypertonic salt water

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Definitions:

Demand Curve

A graph showing the relationship between the price of a good and the quantity of that good that consumers are willing to purchase at various prices.

Quantity Demanded

Quantity demanded is the total amount of a good or service that consumers are willing to purchase at a particular price over a specified period.

Consumer Tastes

Preferences and inclinations of consumers towards certain products, brands, or services, often influenced by cultural, social, and personal factors.

Price-inelastic

Describes a market situation where the quantity demanded of a product does not change significantly when its price changes.