Which of the Following Statements Are True of Buffer Systems

question 127

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.

---

Definitions:

Nonparents

Individuals who do not have children, either by choice or circumstance.

Child-Free

Individuals or couples who choose not to have children.

Infertile

The inability to conceive a child after a year or more of regular sexual intercourse without the use of birth control.

Placenta

An organ that connects the developing fetus to the uterine wall to provide nutrients and oxygen via the mother’s bloodstream to the fetus while also removing waste products from the fetus’ blood.