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:

Debt/Equity Ratio

A financial ratio indicating the relative proportion of shareholders' equity and debt used to finance a company's assets, often used to assess financial leverage.

Cost of Debt

The cost of debt is the effective interest rate a company pays on its debts, including loans and bonds, accounting for tax benefits.

Equity Financed

Refers to raising capital for a company through the sale of shares in the company to investors.

Tax Rate

The portion of one's income or a company's earnings attributed to taxes.