Which mode of transmission is not addressed by transmission precautions?
A) airborne
B) direct contact
C) droplet
D) vector
E) airborne and droplet
Answer: D
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Most scientific names are derived from
a. English. b. Latin. c. Italian. d. French.
Uracil will pair with
a. ribose. b. adenine. c. cytosine. d. thymine. e. guanine.
The concept that simple organic molecules could form spontaneously from simpler raw materials was
first proposed by: a. Miller and Urey. b. Charles Darwin. c. Thomas Malthus. d. Watson and Crick. e. Oparin and Haldane.
How is the HIV provirus different from a lambda-phage prophage?
A. the HIV provirus is integrated permanently into the host cell's DNA. B. all subsequent generations of HIV-infected cells carry the provirus. C. all the offspring of a cell infected with a prophage will contain the virus. D. the HIV provirus is inactive inside the host cell. E. lambda phage-infected cells produce virus slowly over time.