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Kaplan Qbank USMLE



Author9 Posts
  #1

Each of the following statements concerning the killing of bacteria is correct EXCEPT:
A) Lysozymme in tears can hydrolyze bacterial cell walls
B) Silver nitrate can inactivate bacterial enzymes
C) Detergents can disrupt bacterial cell membranes
D) Ultraviolet light can degrade bacterial capsules

___________________
"If He takes you to it, He'll take you through it."

  #2

b--------

  #3

no

___________________
"If He takes you to it, He'll take you through it."

  #4

a :?: (whats the answer by-the-way)

  #5

the answer is D

___________________
"If He takes you to it, He'll take you through it."

  #6

correct...UV light crosslinks DNA, has no effect on capsules.

  #7

Why not A??

  #8

Lysozyme hydrolyzes the peptidoglycan component of bacterial cell walls.

  #9

I'd go with D also.

Lysozyme is an enzyme found in egg white, tears, and other secretions. It is responsible for breaking down the polysaccharide walls of many kinds of bacteria and thus it provides some protection against infection.







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