All of the following substances are effective against nonenveloped viruses EXCEPT
A) alcohol.
B) chlorine.
C) ethylene oxide.
D) ozone.
E) None of the answers is correct; all of these are equally effective against nonenveloped viruses.
A
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Antihistamines relieve allergy symptoms by
a. inhibiting the release of histamines and cytokines. b. binding directly to histamines. c. destroying mast cells before they can produce histamines. d. binding to the allergens. e. stimulating effector T cells to produce more cytokines
Which antibody is most commonly associated with
an allergic reaction? a. IgG b. IgA c. IgD d. IgM e. IgE
There are three alleles for blood type, IA and IB are both dominant to iO but IA is not dominant to IB. A man has type O blood. A woman has type A blood but her father had type B blood. If this man and this woman have children what are the possible genotypes of the offspring?
A. iOiO and IAiO B. iOiO and IBiO C. iOiO only D. IAIB and IBiO
Which cell structure physically moves the cell's chromosomes?
A) the mitotic spindle B) the cell wall C) the plasma membrane D) the contractile ring