MICR130 MODULE 9 Exam Questions With Detailed Answers
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Course
MICR130 MODULE 9
Institution
MICR130 MODULE 9
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MICR130 MODULE 9 Exam Questions With Detailed Answers
/._____ describes the ability of a pathogen to overcome host defenses and cause disease. - pathogenicity.
/
.A knife wound is an example of which portal of entry? - parenteral route.
/.A patient who has been hospitalized with u...
/._____ describes the ability of a pathogen to overcome host defenses and cause
disease. - pathogenicity.
/.A knife wound is an example of which portal of entry? - parenteral route.
/.A patient who has been hospitalized with uncontrolled muscle spasms has probably
been infected with bacteria that secrete a(n) - neurotoxin.
/.A person who attended a picnic early in the day develops a very high fever and is
unresponsive by the evening. This person most likely has been exposed to a(n) -
superantigen.
/.A plasmid that carries an antibiotic resistance gene is called a ______. - R factor.
/.All of the following are methods of avoiding host antibodies EXCEPT - membrane-
disrupting toxins.
/.All of the following are used by bacteria to attach to host cells EXCEPT - A-B toxins.
/.All of the following contribute to a pathogens invasiveness EXCEPT? - toxins.
/.An encapsulated bacteria can be virulent because the capsule ____. - resists
phagocytosis.
/.An exotoxin that has the ability to kill or damage host cells is referred to as a(n) -
cytotoxin.
/.Antibiotics can lead to septic shock if used to treat _______. - Gram-negative bacterial
infections.
/.Antibiotics can lead to septic shock if used to treat - gram-negative bacterial infections.
/.Bacteria such as E. coli and Salmonella produce invasins that bind host cells, thus
causing the cells to - engulf the bacteria.
/.Bacteria that cause periodontal disease have adhesins for receptors on streptococci
that colonize on teeth. This indicates that ______. - streptococcal colonization is
necessary for periodontal disease.
, /.Botulism is caused by ingestion of a proteinaceous exotoxin; therefore, it can easily be
prevented by - boiling food prior to consumption.
/.Certain traits that allow pathogens to create infection and cause disease are termed -
virulence factors.
/.Cytopathic effects are changes in host cells due to _____. - viral infections.
/.Cytopathic effects are changes in host cells due to - viral infections.
/.Disease can often be caused by one or two cells entering the human host.
true or false? - false
.
/.Disease can often be caused by one or two cells entering the human host. - false.
/.Endotoxins are _____. - part of the gram-negative cell wall.
/.Endotoxins are - part of the gram-negative cell wall.
/.Endotoxins are also known as? - Lipid A.
/.Endotoxins in sterile injectable drugs could cause - septic shock symptoms.
/.Exotoxins are enzymes.
true or false? - true.
/.Given that the LD50 for staphylococcal enterotoxin is 1350 ng/kg and the LD50for
Shiga toxin is 250 ng/kg in mice, which of the following statements is true? - A much
larger dose of staphylococcal enterotoxin is needed to cause symptoms, compared to
that of Shiga toxin.
/.Gram-negative septic shock results from the following events. What is the second
step? - LPS is released from gram-negative bacteria.
/.How are immune cells able to detect foreign pathogens? - They are able to detect
structures on the surfaces of foreign cells that are not found in the host.
/.How are superantigens different from other types of exotoxins? - Superantigens cause
an overstimulation of the host immune system.
/.How can capsules enable bacteria to evade the immune system? - Capsules block the
complement biding sites on the surface of the pathogen.
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