Lyme disease is caused by
A) nitrogen-fixing bacteria.
B) rats.
C) Borellia burgdorferi.
D) Clostridium botulinum.
E) contaminated water.
C
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A ribosome consists of ____
a. two small subunits b. two large subunits c. three subunits of different size d. rRNA and ribosomal proteins e. tRNA and ribosomal proteins
The fourteen species of finches native to the Galápagos Islands ____, and therefore illustrate adaptive radiation
a. diverged following a mass extinction event b. evolved from a single common ancestor c. migrated independently from South America d. represent a convergent evolutionary process e. evolved from numerous distant ancestors
Distances on genetic maps are measured in ______________ and distances on physical maps are
measured in _______________. Fill in the blank(s) with the appropriate word(s).
In E. coli, the insertion of the amino acid selenocysteine into a polypeptide requires
a. a unique type of ribosome. b. a unique type of tRNA. c. programmed frameshifting during translation. d. use of a thymine in the mRNA codon. e. RNA editing.