A vaccine for the common cold is not feasible because
A) the surface antigens of rhinovirus mutate frequently.
B) the cause is unknown.
C) the rhinovirus cannot be grown in sufficient quantities.
D) there are more than 100 types of rhinovirus.
Correct Answer:
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Q9: The rhinovirus contains
A)single-stranded RNA and is an
Q10: Otitis media probably develops from an infection
Q11: Diphtheria toxin works on
A)lysosomes.
B)mitochondria.
C)chloroplasts.
D)elongation factor 2.
Q12: Rebecca Lancefield showed that almost all the
Q13: The conjuctivae
A)have few resident bacteria.
B)are often covered
Q15: The disease characterized by the appearance of
Q16: The process used for identifying the different
Q17: Most colds are probably caused by
A)rhinovirus.
B)S.aureus.
C)Pseudomonas sp.
D)coli.
Q18: Enlargement of which of the following structures
Q19: Otitis media and sinusitis are usually preceded
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