You have a very sore throat with symptoms indicating strep throat. Since you are taking microbiology right now, you decide that you will take a swab from your throat and swab it onto an enrichment medium like a blood agar plate or a brain-heart infusion agar plate. Why is this not a good idea?
A. You are on a diet now, and you are afraid that the food that you are eating will in some way impact the growth of the bacteria. As a result, you will not get valid results.
B. You use a mouthwash a couple of times a day, so you think that the antibacterial properties of the mouthwash will inhibit or kill the oral bacteria and results in invalid results.
C. Due to the fact that you cannot easily see the sampling site, there is a high probability that you will not be able to obtain your own specimen without contaminating the sample with your own normal biota.
D. All of these statements are correct.
Answer: C
You might also like to view...
Cystic fibrosis primarily affects which organ?
a. brain b. heart c. muscle d. lungs e. bones
A vaccination is a good example of
A. artificially acquired passive immunity. B. artificially acquired active immunity. C. naturally acquired passive immunity. D. naturally acquired active immunity.
Localized redness and swelling, along with warmth and pain are associated with which of the following?
a. the adaptive immune response b. the natural killer cell response c. the inflammatory response d. the complement response
How are fish gills able to increase the efficiency of oxygen removal from water?
A) the opeculum pumps water through the gills B) the flow of blood over the gills is opposite the flow of H2O C) the number of blood vessels are increased in the operculum D) the oxygen is taken in through the cloaca and sent to gills