Why do scientists consider HIV to be an emerging virus?
A) HIV infected humans long before the 1980s, but it has now mutated to a more deadly form.
B) HIV mutates rapidly making the virus very different from HIV in the early 1980s.
C) HIV suddenly became apparent and widespread in the 1980s.
D) HIV is now starting to cause diseases other than AIDS, such as rare types of cancers and pneumonias.
Answer: C
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In cellular respiration, glucose is _____ to CO2 and oxygen is _____ to water
A. oxidized; reduced B. reduced; oxidized C. deoxygenated; phosphorylated D. phosphorylated; deoxygenated E. oxidized; oxidized
An individual animal that can produce both sperm and eggs is known as:
A. a gametophyte B. an hermaphrodite C. a morphodyte D. a bisexual E. a transexual
PCR is ____
a. repeated DNA replication cycles of a specific region of a DNA molecule b. DNA replication in which DNA polymerase replicates an entire chromosome c. a reaction in which restriction enzymes cut a gene of interest from the chromosome d. transcription during which only a portion of the cell’s DNA is expressed e. translation during which only some mRNA molecules are translated to make proteins
To which of the following processes is
transpiration most analagous?
a. water moving through a water hose b. magnets attracting metal c. sucking soda through a straw d. a waterfall e. a sponge absorbing a spill