A Solution of Equal Amounts of Hemoglobin and Myoglobin Is

question 2

Multiple Choice

A solution of equal amounts of hemoglobin and myoglobin is maintained at a very low partial pressure of oxygen, so that both proteins exist predominantly in the deoxygenated form.What happens when the solution is then bubbled with a small amount of oxygen?

• A)Myoglobin undergoes a conformational change that raises its oxygen affinity above that of hemoglobin.
• B)2,3-BPG dissociates from hemoglobin and binds to myoglobin.
• C)Much more of the dissolved oxygen binds to myoglobin than to hemoglobin.
• D)Hemoglobin dissociates into its subunits.
• E)Most hemoglobin becomes oxygenated, whereas most myoglobin remains deoxygenated.

---

Definitions:

ABC

Activity-Based Costing; a method of assigning overhead and indirect costs to specific products or projects based on their use of activities.

Activity

Any action or operation within a business that incurs costs or generates revenues.

Plantwide Overhead Rate

An overhead allocation rate that applies uniformly across an entire manufacturing plant, instead of being divided by department or activity.

Machine Hours

A measure of the amount of time a machine is operated within a given period.