One of the Buffers That Contributes to PH Stability in Human

question 60

Multiple Choice

One of the buffers that contributes to pH stability in human blood is carbonic acid (H2CO3) . Carbonic acid is a weak acid that dissociates into a bicarbonate ion (HCO3-) and a hydrogen ion (H+) . Thus, H2CO3 ↔ HCO3- + H+
If the pH of the blood drops, one would expect

• A) a decrease in the concentration of H2CO3 and an increase in the concentration of HCO3-.
• B) the concentration of hydroxide ion (OH-) to increase.
• C) the concentration of bicarbonate ion (HCO3-) to increase.
• D) the HCO3- to act as a base and remove excess H+ with the formation of H2CO3.
• E) the HCO3- to act as an acid and remove excess H+ with the formation of H2CO3.

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Definitions:

Cognitive Interpretation

The process of making sense of perceptions, sensations, and experiences through mental processing, often involving assigning meaning and integrating new information with existing knowledge.

Adaptive Value

The extent to which a trait or behavior increases the chances of survival and reproduction of an organism within its environment.

Emotional Evolution

The progression and change in emotional reactions and expressions in response to societal and environmental influences over time.

Autonomic Arousal

The activation of the autonomic nervous system, which controls involuntary bodily functions and is associated with emotional and stress responses.