Which of the Following Statements Are True of Buffer Systems

question 134

Multiple Choice

Which of the following statements are true of buffer systems? (Read carefully and select all of the correct statements.)

• A)When body fluids become too acidic,the bicarbonate buffer system forms more sodium bicarbonate from the acid.
• B)The phosphate buffer system is used by the kidneys to excrete or retain hydrogen ions.
• C)An amino acid acts as an acid when its carboxyl group picks up a hydrogen ion.
• D)Proteins as buffers are of greatest importance within cells.
• E)An amino acid acts as a base when its amine group gives off a hydrogen ion.
• F)A buffer system responds very quickly to a change in the pH of body fluids,but its molecules may be rapidly used up.

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Definitions:

Labor Productivity

An indicator of economic efficiency that evaluates the quantity of goods and services produced (output) relative to the total hours spent in producing those goods and services.

Complementary Resources

Resources used together in production that increase each other's effectiveness.

Fixed Proportions

A production condition where inputs must be combined in strict, unchanging ratios to produce output.

Substitution Effect

The change in the quantity demanded of a good resulting from a change in its price, making it more or less expensive relative to other goods.