Which of the following media differentiates between Enterococcus and Streptococcus?
A. Eosin Methylene Blue Agar
B. Bile Esculin Agar
C. Columbia CNA Agar
D. MacConkey Agar
E. Mannitol Salt Agar
Ans: B. Bile Esculin Agar
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The rolled tube method is most commonly used for isolating which grouping of microorganisms?
A) anaerobes B) chemolithotrophs C) chemoorganotrophs D) aerobes
For polymerase chain reaction to occur,
a primers must hydrogen-bond to the template DNA b. all DNA fragments must be identical. c the DNA must remain double stranded. d. a sticky end must be available for the ligase enzyme to function. e. all of these must occur.
Four of the five animals listed below possess the
same type of skeleton. Select the exception. a. beetle b. snake c. bird d. human e. frog
Comparative genome studies show that humans and _____________________ shared a common ancestor
approximately 5.4 to 6.3 million years ago. Fill in the blank(s) with the appropriate word(s).