Catalytic Mechanism of Myeloperoxidase & Hypochlorous Acid Functions

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Science, Biology, Chemistry
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University
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Hard
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary function of myeloperoxidase in neutrophils?
To transport oxygen
To repair damaged cells
To generate hypochlorite for pathogen destruction
To synthesize proteins
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which molecule serves as the substrate for myeloperoxidase?
Oxygen
Hydrogen peroxide
Water
Chlorine
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the significance of the iron oxy species in the myeloperoxidase mechanism?
It transports electrons to the cell membrane
It stabilizes the enzyme structure
It facilitates the generation of reactive oxidative species
It acts as a reducing agent
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of hypochlorous acid in the biochemical context?
It stabilizes cell membranes
It acts as a reducing agent
It oxidizes proteins, particularly cysteine residues
It enhances protein synthesis
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does hypochlorous acid affect cysteine residues in proteins?
It stabilizes their structure
It enhances their nucleophilic properties
It converts them into functional disulfide bridges
It transforms them into sulfonic acid, rendering them non-functional
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is hypothyroid cyanide, and how is it generated?
A reactive oxidative species generated by myeloperoxidase using thiocyanate
A stable compound formed during protein synthesis
A byproduct of cellular respiration
A free radical generated by oxygen
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the structural difference between hypochlorous acid and hypothyroid cyanide?
Hypochlorous acid contains chlorine, while hypothyroid cyanide contains thiocyanate
Hypochlorous acid is a free radical, while hypothyroid cyanide is not
Hypochlorous acid is a reducing agent, while hypothyroid cyanide is an oxidizing agent
Hypochlorous acid is stable, while hypothyroid cyanide is unstable
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