All of the Following Are Characteristics of Hemoglobin's Binding of Oxygen

question 26

Multiple Choice

All of the following are characteristics of hemoglobin's binding of oxygen EXCEPT:

• A) CO₂ promotes dissociation of O₂ from hemoglobin by lowering the pH.
• B) Protons promote binding of oxygen by Hb.
• C) 2,3-Bisphosphoglycerate (BPG) promotes release of O₂ by Hb.
• D) CO₂ can bind with Hb's free amino groups and stabilize deoxy-Hb.
• E) BPG and O₂ are mutually exclusive allosteric effectors of Hb.

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Definitions:

Medium

A channel or means for the transmission of information or data, or a substance in which something else is conveyed or occurs.

Vibration

An oscillation or rapid motion back and forth or up and down of particles in a medium or an object.

Molecules

The smallest unit of a chemical substance that can exist independently while retaining the composition and chemical properties of the substance.

Opponent-Process Theory

A theory proposing that our emotions are regulated by mechanisms that operate in opposing pairs, such as happiness-sadness, explaining why high levels of one emotion can lead to subsequent feelings of the opposite.