The transmission of leprosy is by
A. direct human-to-human contact.
B. the fecal-oral route.
C. contact with infected blood products.
D. contact with infected nasal secretions.
E. direct human-to-human contact AND contact with infected nasal secretions.
E.
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Cancer occurs when
A. both uncontrolled cell division and stimulation of apoptosis occurs. B. cells are unable to divide because of a mutation. C. apoptosis occurs. D. the regulation of the cell cycle is lost and uncontrolled cell division occurs. E. faulty spindle fibers are unable to pull chromatids apart.
In addition to restriction enzymes, which of the following enzymes is required to insert a fragment of DNA into a cloning vector?
A) DNA polymerase B) DNA ligase C) RNA polymerase D) Reverse transcriptase E) Topoisomerase
An unexpected change in a cell's genetic makeup is called a ________.
Fill in the blank(s) with the appropriate word(s).
Which of the following form conidiospores?
A) endospore-forming gram-positive rods and cocci B) actinomycetes and related organisms C) rickettsias D) anaerobic gram-negative cocci E) spiral and curved bacteria