A laboratory technologist splashed a blood specimen onto his face, eyes, nose, and mouth. This specimen was from an HIV positive patient. If this blood exposure leads to HIV infection in the technologist, the transmission route is
A. direct.
B. fomite.
C. droplet nuclei.
D. aerosol.
E. vehicle.
Answer: E
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Fill in the blank with correct word.
In photosynthesis, the uptake of CO2 by plants occurs through openings on the surface of
A) roots. B) stems. C) leaves. D) flowers.
A fragment cut out of DNA and a plasmid cut open for insertion of the fragment must both have been
cut with the same type of restriction enzyme. Indicate whether the statement is true or false.
Science is ________
A) the inquiry-based effort to describe and explain nature B) the search for truth C) an organized set of principles for how to behave ethically and morally D) all of the above