Question

Within a very smelly and obnoxious mixed microbial community, there exists both Ohious statious and Michiganeous wolverenious. If the community contains 10,000,000 M. wolverenious, which can be detected after 30 rounds of PCR amplification of 16S rRNA, how many O. statious are there if it takes 50 rounds of PCR to detect O. statious 16S rRNA in the same smelly microbial community.
a. 100,000
b. 10,000
c. 10
d. 100
e. 1,000

Which of the following might best address whether or not a particular hand sanitizer is changing the microbial community structures of the human hand?
a. studies to compare the hand microbiome on 10 different individuals after using hand sanitizer for three months
b. studies to compare the hand microbiome before and after using the hand sanitizer for 1 week
c. studies to compare the differences in the microbiome on the front and back of the hands of a healthy individual
d. studies to compare the differences in the microbiome on the front and back of the hands of a diseased individual
e. studies to compare the microbiome on the right and left hands after using the hand sanitizer for 2 weeks