Which of the Following Statements Are True of Buffer Systems

question 5

Multiple Choice

Which of the following statements are true of buffer systems (Select all that apply) ?

• 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:

Electrophilic Aromatic Substitution

A chemical reaction in which an atom, typically a halogen, is substituted for a hydrogen atom on an aromatic ring, facilitated by an electrophile.

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A chronic disease characterized by compulsive drug seeking and use, despite harmful consequences.

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A cluster of conditions that occur together, increasing the risk of heart disease, stroke, and diabetes; these conditions include increased blood pressure, high blood sugar, excess body fat around the waist, and abnormal cholesterol levels.

Resonance Structures

Representations of a molecule showing different possible positions for double bonds and lone pairs, indicating the molecule's delocalized electrons.