The seed of the castor bean (Ricinus communis) contains large amounts of ricin, a deadly poison for animals, including humans. One of the two subunits of this toxin is a lectin that binds terminal N-acetylgalactosamine residues on glycoproteins on the surface of eukaryotic cells, allowing the other subunit to enter the cell and kill it by preventing proteins from being made. Select the possible antidotes that could prevent or reverse ricin-mediated entry of the toxin. O an enzyme that degrades lipopolysaccharides a compound that prevents synthesis of extracellular glycoproteins an oligosaccharide with the same structure as that recognized by ricin O a compound that activates enzymes that break down glycogen into glucose V a high concentration of N-acetylgalactosamine

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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The seed of the castor bean (Ricinus communis) contains large amounts of ricin, a deadly poison for animals, including humans.
One of the two subunits of this toxin is a lectin that binds terminal N-acetylgalactosamine residues on glycoproteins on the
surface of eukaryotic cells, allowing the other subunit to enter the cell and kill it by preventing proteins from being made.
Select the possible antidotes that could prevent or reverse ricin-mediated entry of the toxin.
an enzyme that degrades lipopolysaccharides
a compound that prevents synthesis of extracellular glycoproteins
an oligosaccharide with the same structure as that recognized by ricin
a compound that activates enzymes that break down glycogen into glucose
a high concentration of N-acetylgalactosamine
Transcribed Image Text:The seed of the castor bean (Ricinus communis) contains large amounts of ricin, a deadly poison for animals, including humans. One of the two subunits of this toxin is a lectin that binds terminal N-acetylgalactosamine residues on glycoproteins on the surface of eukaryotic cells, allowing the other subunit to enter the cell and kill it by preventing proteins from being made. Select the possible antidotes that could prevent or reverse ricin-mediated entry of the toxin. an enzyme that degrades lipopolysaccharides a compound that prevents synthesis of extracellular glycoproteins an oligosaccharide with the same structure as that recognized by ricin a compound that activates enzymes that break down glycogen into glucose a high concentration of N-acetylgalactosamine
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