Answer the question using the accompanying figure. The constant region of a heavy chain is indicated by
number____.
a. 1
b. 2
c. 3
d. 4
e. 5
ANSWER: e
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A patient has a staphylococcal infection of the blood; a septicemia - very serious and possibly deadly. As the doctor, you would like to prescribe a relatively non-toxic and inexpensive drug out of the cephalosporin family. However, if the patient harbors a strain of Staphylococcus that is resistant to a variety of antibiotics, you would prefer to use vancomycin-- which is highly effective against Staphylococcus. Which of the following explains why the cephalosporin drug is preferred for use over the vancomycin?
A. Vancomycin is very toxic, and the Staphylococcus strain could become resistant leaving no back-up drugs with which to treat the infection. B. You really do not know that much about vancomycin, so you would rather go with a drug that you can find out more about. C. You would rather give an inexpensive drug to save the family money. D. Vancomycin is one of the most selectively toxic drugs there is, so you would prefer one that has a more broad-spectrum effect.
Human cells contain ___ DNA's
Fill in the blank(s) with the appropriate word(s).
The following is true of quarternary ammonium compounds EXCEPT
A) they are non-toxic at lower concentrations. B) they are tasteless. C) they are effective when combined with soaps. D) they are stable. E) they may be an ingredient in mouthwash.
Which of the following would be used to sterilize a mattress?
A. autoclaving B. formaldehyde C. ethylene oxide D. heavy metals E. non-ionizing radiation