List two especially useful characteristics of cloning vectors
A) high copy number and antibiotic resistance gene(s)
B) nonautonomous replication and transposition
C) virulence and lysogenicity
D) ability to integrate into the host chromosome and then causing a lytic cycle
E) reverse transcriptase and ligase activities
A
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________ are physical or chemical agents that cause mutation.
Fill in the blank(s) with the appropriate word(s).
Match the following items with the correct phrases.
_______1. The width of a typical coccus. _______2. The resolving power of the unaided eye. _______3. The resolving power of the scanning electron microscope. _______4. The resolving power of the transmission electron microscope. _______5. The resolving power of the compound light microscope. a. 0.2 nm b. 20 nm c. 0.2 ?m d. 1 ?m e. 0.2 mm
For which of the following is there fossil evidence of 100 extinct species from five continents, with
only one extant species?
a. humans b. birds c. marine mammals d. insects e. horses
Biochemical tests include all of the following except
A. tests for the presence of specific enzymes. B. antibiotic sensitivity tests. C. ribotyping tests. D. gas production tests. E. sugar fermentation tests.