The oldest "manufactured" tools have been found in:
a. North America
b. Eurasia
c. Africa
d. Australia
e. South America
c
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The two tenets of natural selection are (select all that apply):
A. sexual reproduction in a population. B. variation in a population. C. competition in a population. D. increasing number of members in a population.
Which of the following Ralstonia spp. most often causes infections in cystic fibrosis patients?
a. Ralstonia gilardii b. Ralstonia insidiosa c. R. mannitolilytica d. R. pickettii
Haploid genomes contain two sets of chromosomes
Indicate whether the statement is true or false
Which of the following is not a reason why Clostridium difficile is an increasing concern in healthcare settings?
A) antibiotic misuse and overuse in the population B) antibiotic resistance C) emerging superstrains that make a third type of toxin D) the bacterium can naturally escape drugs and disinfectants by retreating into a resistant spore state E) additional modes of transmission have occurred in several isolated cases