In Both Myoglobin and Hemoglobin,O₂ Reversibly Binds to A(n)__________ Atom

question 74

Multiple Choice

In both myoglobin and hemoglobin,O₂ reversibly binds to a(n) __________ atom contained in a porphyrin ring that is tightly bound to the protein.

• A) calcium
• B) iron
• C) magnesium
• D) manganese

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Definitions:

Erectile Disorders

A type of sexual dysfunction characterized by the inability to develop or maintain an erection during sexual activity.

Obsessive-Compulsive Disorder

A mental disorder characterized by unwanted repetitive thoughts (obsessions) and actions (compulsions).

Monoamine Oxidase (MAO) Inhibitors

A class of antidepressant drugs that work by inhibiting the activity of the enzyme responsible for breaking down neurotransmitters such as serotonin and norepinephrine, thereby increasing their levels.

Antidepressants

Medications used to treat depression by affecting neurotransmitters in the brain, often improving mood and emotional state.