Roughly 50 percent of severe sore throat cases are due to ________, whereas the rest are normally caused by ________ infections
a. pneumonia viruses / bacterial
b. pneumonia viruses / other viral
c. Streptococcus pyogenes / bacterial
d. Streptococcus pyogenes / viral
Answer: D
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Which of the following processes is associated with the altering of histone proteins in vivo?
A) acetylation B) alkylation C) methylation D) transhydroxylation E) both choices A and C
The term "segmented" refers to viruses that
A. may contain several pieces of RNA. B. have an icosahedral-shaped capsid. C. are linked together before budding out. D. have an envelope.
An application of too much fertilizer will negatively affect the movement of materials in the phloem.
Answer the following statement true (T) or false (F)
One solution to the problem of species extinction is captive breeding in zoos and gardens. What are some of the problems associated with this solution?
What will be an ideal response?