Which Statement Is False About the Heme Group

question 108

Multiple Choice

Which statement is false about the heme group?

• A)When oxygen binds to heme,the iron ion is oxidized from Fe²+ to Fe ³+.
• B)If exposed to air,a free heme group (not associated with hemoglobin)is readily oxidized converting Fe²+ to Fe ³+ and can no longer bind oxygen.
• C)The heme group is tightly,but non-covalently,held in myoglobin molecule.
• D)The chemical structure of the heme groups in myoglobin and hemoglobin are identical.

Understand the significance of continuing education for OHNs.

Recognize the role of OHNs in emergency preparedness and disaster planning.

Understand the importance of confidentiality and privacy in occupational health nursing.

Identify the impact of federal regulations on the practice of occupational health nursing.

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Definitions:

Melatonin

A substance created by the pineal gland responsible for controlling sleep and wakefulness cycles.

Islets of Langerhans

Clusters of pancreatic cells that produce hormones, including insulin, critical for regulating blood sugar levels.

Glucagon

Glucagon is a hormone produced by the pancreas that increases blood glucose levels by stimulating the liver to convert stored glycogen into glucose.

Insulin

An agent generated in the pancreas that manages the concentration of glucose in the bloodstream by aiding the absorption of glucose by the body's tissues.