Which of the following statements accurately describes exotoxins? Group of answer choices They are toxins produced only by gram-positive bacteria. They are released only during the lysis of bacterial cells. They are lipopolysaccharides released upon bacterial cell death. They are soluble proteins secreted by living bacteria.
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Exotoxins can be the following EXCEPT: - they are LPS/lipopolysaccharide - they are proteins - they are made by bacteria growing in our bodies - they are secreted and act OUTSIDE the bacteria
Sri K.
27. Which of the following statements about exotoxins is generally FALSE? A) They are more potent than endotoxins. B) They are composed of proteins. C) They are composed of lipopolysaccharides. D) They have specific methods of action. E) They are produced by gram-positive bacteria. 28. All of the following are examples of entry via the parenteral route EXCEPT A) injection. B) bite. C) surgery. D) hair follicle. E) skin cut. 29. Lysogenic bacteriophages contribute to bacterial virulence because bacteriophages A) give new gene sequences to the host bacteria. B) produce toxins. C) carry plasmids. D) kill the bacteria, causing release of endotoxins. E) kill human cells. 30. All of the following bacteria release endotoxin EXCEPT A) Staphylococcus aureus. B) Salmonella typhi. C) Neisseria meningitidis. D) Proteus vulgaris. E) Haemophilus influenzae. 31. Nonpathogenic Escherichia coli acquired the Shiga toxin gene by A) phagocytosis. B) transduction. C) conjugation. D) transformation. E) None of the above
Shyam P.
27. Which of the following statements about exotoxins is generally FALSE? A) They are more potent than endotoxins. B) They are composed of proteins. C) They are composed of lipopolysaccharides. D) They have specific methods of action. E) They are produced by gram-positive bacteria. 28. All of the following are examples of entry via the parenteral route EXCEPT A) injection. B) bite. C) surgery. D) hair follicle. E) skin cut. 29. Lysogenic bacteriophages contribute to bacterial virulence because bacteriophages A) give new gene sequences to the host bacteria. B) produce toxins. C) carry plasmids. D) kill the bacteria, causing release of endotoxins. E) kill human cells. 30. All of the following bacteria release endotoxin EXCEPT A) Staphylococcus aureus. B) Salmonella typhi. C) Neisseria meningitidis. D) Proteus vulgaris. E) Haemophilus influenzae. 31. Nonpathogenic Escherichia coli acquired the Shiga toxin gene by A) phagocytosis. B) transduction. C) conjugation. D) transformation. E) None of the above.
Suman K.
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