Ligation reactions occur most efficiently between DNA fragments:
A. that have sticky ends.
B. that have blunt ends.
C. that have complementary sticky ends.
D. that are cleaved with different restriction enzymes.
E. where one fragment has a sticky end and the other has a blunt end.
C
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Transmission of Mycobacterium leprae involves
A) direct contact. B) respiratory transmission. C) both direct contact and the respiratory route. D) penetration into unbroken skin.
Bacterial strains that are characterized by biochemical differences are called ________.
Fill in the blank(s) with the appropriate word(s).
Nucleic acids are polymers made up of which of the following monomers?
A) nucleotides B) sugars C) amino acids D) nitrogenous bases
Which structure acts like a motor for the bacterial flagellum?
a. hook b. capsule c. filament d. basal body
e. protein rings