One of the Buffers That Contribute to PH Stability in Human

question 24

Multiple Choice

One of the buffers that contribute to pH stability in human blood is carbonic acid (H2CO3) . Carbonic acid is a weak acid that, when placed in an aqueous solution, dissociates into a bicarbonate ion (HCO3−) and a hydrogen ion (H+) , as noted below. If the pH of blood increases, one would expect ________.

• A) a decrease in the concentration of H2CO3 and an increase in the concentration of HCO3−
• B) an increase in the concentration of H2CO3 and a decrease in the concentration of HCO3−
• C) a decrease in the concentration of HCO3− and an increase in the concentration of H+
• D) an increase in the concentration of HCO3− and a decrease in the concentration of OH−
• E) a decrease in the concentration of HCO3− and an increase in the concentration of H2CO3 and H+

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Definitions:

Allergic Reaction

A hypersensitive response of the immune system to substances that are usually harmless to most people, such as pollen, food, or dust.

Antibody Class

Categories of antibodies distinguished by variations in their heavy chain constant regions, affecting their functional location and immune response actions.

IgE

Immunoglobulin E, a class of antibodies that play a crucial role in allergic reactions by recognizing allergens and triggering immune responses.

Immune Response

The body's defense mechanism against foreign substances or pathogens involving both innate and adaptive immune systems.