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Use the Following Paragraph to Answer the Corresponding Question(s)

Question 29

Multiple Choice

Use the following paragraph to answer the corresponding question(s) .
Masatomo Kawakubo et al.reported in Science in August 2004 that the human stomach contains a natural,carbohydrate-based antibiotic that probably protects a large portion of the population from various diseases caused by the bacterium Helicobacter pylori.This bacterium has been linked to peptic ulcers,gastritis,and stomach cancer.This naturally occurring antibiotic is described by Kawakubo as having a terminal α1,4-linked N-acetylglucosamine (NAG) ,and it acts by inhibiting the biosynthesis of a major component of the cell wall in H.pylori.[Source: M.Kawakubo et al. ,Science 305 (2004) : 1003.]
-Which of the following structures is most consistent with Kawakubo's description of this antibiotic?


A) Use the following paragraph to answer the corresponding question(s) . Masatomo Kawakubo et al.reported in Science in August 2004 that the human stomach contains a natural,carbohydrate-based antibiotic that probably protects a large portion of the population from various diseases caused by the bacterium Helicobacter pylori.This bacterium has been linked to peptic ulcers,gastritis,and stomach cancer.This naturally occurring antibiotic is described by Kawakubo as having a terminal α1,4-linked N-acetylglucosamine (NAG) ,and it acts by inhibiting the biosynthesis of a major component of the cell wall in H.pylori.[Source: M.Kawakubo et al. ,Science 305 (2004) : 1003.] -Which of the following structures is most consistent with Kawakubo's description of this antibiotic? A) B) C) D)
B) Use the following paragraph to answer the corresponding question(s) . Masatomo Kawakubo et al.reported in Science in August 2004 that the human stomach contains a natural,carbohydrate-based antibiotic that probably protects a large portion of the population from various diseases caused by the bacterium Helicobacter pylori.This bacterium has been linked to peptic ulcers,gastritis,and stomach cancer.This naturally occurring antibiotic is described by Kawakubo as having a terminal α1,4-linked N-acetylglucosamine (NAG) ,and it acts by inhibiting the biosynthesis of a major component of the cell wall in H.pylori.[Source: M.Kawakubo et al. ,Science 305 (2004) : 1003.] -Which of the following structures is most consistent with Kawakubo's description of this antibiotic? A) B) C) D)
C) Use the following paragraph to answer the corresponding question(s) . Masatomo Kawakubo et al.reported in Science in August 2004 that the human stomach contains a natural,carbohydrate-based antibiotic that probably protects a large portion of the population from various diseases caused by the bacterium Helicobacter pylori.This bacterium has been linked to peptic ulcers,gastritis,and stomach cancer.This naturally occurring antibiotic is described by Kawakubo as having a terminal α1,4-linked N-acetylglucosamine (NAG) ,and it acts by inhibiting the biosynthesis of a major component of the cell wall in H.pylori.[Source: M.Kawakubo et al. ,Science 305 (2004) : 1003.] -Which of the following structures is most consistent with Kawakubo's description of this antibiotic? A) B) C) D)
D) Use the following paragraph to answer the corresponding question(s) . Masatomo Kawakubo et al.reported in Science in August 2004 that the human stomach contains a natural,carbohydrate-based antibiotic that probably protects a large portion of the population from various diseases caused by the bacterium Helicobacter pylori.This bacterium has been linked to peptic ulcers,gastritis,and stomach cancer.This naturally occurring antibiotic is described by Kawakubo as having a terminal α1,4-linked N-acetylglucosamine (NAG) ,and it acts by inhibiting the biosynthesis of a major component of the cell wall in H.pylori.[Source: M.Kawakubo et al. ,Science 305 (2004) : 1003.] -Which of the following structures is most consistent with Kawakubo's description of this antibiotic? A) B) C) D)

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