-The Following Is a Description of an Enzyme Called Superoxide

question 120

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 secondary structure?

• A) a
• B) b
• C) c
• D) d
• E) e

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Definitions:

Unconscious

Part of the mind that contains thoughts, memories, and desires beyond the reach of conscious awareness, significantly influencing behavior and decisions.

Pathological

Pertaining to or caused by disease; describing behaviors or conditions that are extreme, abnormal, or harmful.

Unconscious Forces

The motivations, desires, or thoughts that influence an individual's behavior without their conscious awareness, often explored in psychoanalytic theory.

Normal

Refers to what is considered typical, usual, or conforming to standard or common patterns in a certain context.