The two continents that suggested continental drift are called:
a. North and South America.
b. North America and Europe.
c. South America and Africa.
d. Europe and Asia.
e. Australia and India.
C
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Some virulence genes are carried on plasmids or lysogenic bacteriophages
Indicate whether the statement is true or false.
Species of Rhizobium and Bradyrhizobium bacteria are most directly associated with ____
a. nitrification b. ammonification c. nitrogen cycling d. nitrogen fixation e. nitrogen assimilation
You would like to induce a transversion mutation into a sequence of DNA. Which type of chemical mutagen would give you the best chance of inducing the correct mutation without causing transition mutations as well?
A) base analog B) deaminating agent C) oxidative agent D) alkylating agent E) intercalating agent
Aseptic means
A) sterile. B) free of all microbes. C) clean. D) sanitized. E) free of pathogens.