They are proteins.
Which of the following is an accurate statement about A-B toxins?
Endotoxin is present.
You conduct a Limulus amebocyte lysate (LAL) assay on a sample of fluid that should be sterile. The result is positive. What does this indicate?
evade the host's immune system
Some organisms are capable of orchestrating alterations that are collectively termed antigenic variation. This allows an organism to __________.
Actin molecules
Which of these eukaryotic molecules/structures can be responsible for movement of bacteria within host cells?
They are released upon cell lysis
Which statement is true of endotoxins?
Clostridium botulinum
Which of these organisms does NOT produce an enterotoxin?
hyaluronidase
Which of the following virulence factors is specifically involved in helping an organism to physically spread throughout the body?
Siderophore
Which of these substances does NOT protect a bacterium from phagocytosis?
They are produced only by gram-negative bacteria.
Which of the following statements is NOT true of A-B exotoxins?
They are eliminated from the body as a result of antitoxin production.
Which statement is NOT true of endotoxins?
Clostridium tetani
The pathogenicity of which of the following is NOT the result of lysogeny?
Endotoxin is released from the cell wall of gram-negative bacteria.
Which of these events leads to all of the others in a pyrogenic (fever) response?
loss of contact inhibition
Which of these viral cytopathic effects is most likely to be associated with the development of cancer?
M protein
Which of these is a cell wall component that contributes to invasiveness?
M protein
mycolic acids
Opa
fimbriae
***All of the listed choices contribute to virulence.
Which of the following cell wall components do/does NOT contribute to virulence?
coagulase; lyses fibrin clots
Which one of these pairs is NOT correctly matched?