Microbiology

Question 1

Which of the Following is NOT true about bacterial conjugation?
A. It can be used to map the bacterial genome
B. It changes an F- female bacterium to an F+ male bacterium
C. It involved the transfer of either plasmid DNA, genomic DNA, or both, between 2 bacteria
D. It increases the genetic diversity and size of a bacterial population

Answer 1

D. It increases the genetic diversity and size of a bacterial population

Question 2

MRSA is a serious cause of skin infection. S. Aeureus are Gram+ cocci that grow in clusters. Which of the following is true?
A. MRSA contain an outer cell membrane composed of a phospholipid bilayer
B. MRSA cannot secrete endotoxin because of the presence of a thick cell wall.
C. After gram staining, the MRSA bacteria would appear as a light pink color under the microscope
D. Methicillin function to inhibit the transpeptidase enzyme used by bacteria to cross-link the peptides in the cell wall

Answer 2

D