A patient has come to the clinic for an allergy shot. The patient ...

[mikaylakyoung]

A patient has come to the clinic for an allergy shot. The patient asks the nurse what immunoglobulin (Ig) is located in the body's tissues and is thought to be responsible for allergic reactions. What is the nurse's best response?
 
  A) IgG is thought to be responsible for allergic reactions.
  B) IgA is thought to be responsible for allergic reactions.
  C) IgM is thought to be responsible for allergic reactions.
  D) IgE is thought to be responsible for allergic reactions.

Question 2

Selective toxicity, or the ability to affect certain proteins or enzyme systems in the infecting organism, is a much sought-after quality in an anti-infective agent. How many anti-infective agents have this quality?
 
  A) 75
  B) 50
  C) 25
  D) 0

[Jadwiga9]

Answer to Question 1

D
Feedback:
IgE is the immune globulin that is associated with allergic reactions. These antibodies react with mast cells, causing the release of histamine and other inflammatory chemicals when they have combined with the antigen. IgG, IgA, and IgM are not involved in allergic reactions.

Answer to Question 2

D
Feedback:
Although anti-infective agents target foreign organisms infecting the body of a human host, they do not possess selective toxicity, which is the ability to affect certain proteins or enzyme systems used by the infecting organism but not by human cells. Because all living cells are somewhat similar, however, no anti-infective drug has yet been developed that does not affect the host. Therefore Options A, B, and C are incorrect.

[mikaylakyoung]

Thanks

[Jadwiga9]

Welcome