Bacteriocins Are Molecules That Are Produced by

question 31

Multiple Choice

Bacteriocins are molecules that are produced by

• A) some bacteria and prevent pathogens from adhering to the gut lining.
• B) methanogens and cause flatulence in cows.
• C) digestive microbes in termites and allow digestion of cellulose.
• D) viruses and increase the virulence of zoonotic diseases.

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Definitions:

Atrial Fibrillation

A cardiac rhythm disorder characterized by rapid and irregular beating of the atria of the heart.

Sinoatrial (SA) Node

A group of cells located in the right atrium of the heart that acts as the natural pacemaker, initiating the heart's electrical impulses.

Atrioventricular (AV) Node

A component of the cardiac electrical conduction system located between the atria and ventricles that delays the transmission of electrical impulses to allow for proper filling of the ventricles.

Bundle of His

A collection of heart muscle cells specialized for electrical conduction that transmits the electrical impulses from the AV node to the point of the apex of the fascicular branches.