Question: Which of the following statements about LPS is false?
Answer Options:
A. Only gram-negative bacteria have LPS.
B. LPS can stimulate fever in the host.
C. LPS is an endogenous pyrogen.
D. The lipid A component of LPS is the toxic component.
Answer: C. LPS is an endogenous pyrogen.
Question: In healthy individuals, the upper respiratory tract and lungs are sterile.
Answer Options:
True
False
Answer: False
Question: Propionibacterium acnes can use sebum as a food source.
Answer Options:
True
False
Answer: True
Question: The normal pH of urine is 7.0.
Answer Options:
True
False
Answer: False
Question: All cytokines are chemokines.
Answer Options:
True
False
Answer: False
Question: Serum is the liquid portion of blood without clotting factors.
Answer Options:
True
False
Answer: True
Question: Diapedesis occurs in arteries.
Answer Options:
True
False
Answer: False
Question: Immediately after injury, during acute inflammation, vasodilation occurs to deliver leukocytes to the site.
Answer Options:
True
False
Answer: False
Question: Phagocytic cells can clear granulomas caused by pathogens such as Mycobacterium tuberculosis.
Answer Options:
True
False
Answer: False
Question: Angioedema is a disease that affects the complement system.
Answer Options:
True
False
Answer: True
Question: In the crisis phase, fever is reduced by the hypothalamus stimulating vasoconstriction.
Answer Options:
True
False
Answer: False
Question: Determine whether each feature listed below in A–E is a physical, chemical, or cellular aspect of the innate immune system. An answer may be used more than once.
Answer Options:
A. lymphocyte
B. lysozyme
C. eyelashes
i. physical
ii. chemical
iii. cellular
Answer: A. iii
B. ii
C. i