The Following Is a Description of an Enzyme Called Superoxide

question 9

Multiple Choice

The following is a description of an enzyme called superoxide dismutase. Refer to this paragraph to answer the following question. Superoxide dismutase is an enzyme that detoxifies a free radical called superoxide. This radical is responsible for causing injury during reperfusion after a heart attack, and is also thought to play a role in Parkinson's Disease.^a Depending on what organism the protein is found in, it occurs either as a dimer or tetramer of identical subunits.^b The subunits are mostly -helical with some β-sheet near the C-terminus.^c A metal binding site for manganese, iron, nickel or copper/zinc is composed of residues from both the N-terminus and the C-terminus.^d These residues are: His-26, His-81, Asp-167, His-171.^e
Which statement refers to a prosthetic group?

• A) a
• B) b
• C) c
• D) d
• E) e

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Definitions:

Narcissism

A personality characteristic marked by an exaggerated belief in one's own importance and a profound desire for esteem and focus.

Self-disclosure

The process of disclosing one's own personal details to other individuals, which may enhance connections and promote closeness.

Ostracism

The act of ostracizing or barring someone from participation in a community or group.

Narcissism

A personality trait characterized by a grandiose sense of self-importance, a need for excessive admiration, and a lack of empathy for others.