Which of the following cytokines is most antiviral in its action?
A.
Interleukin-1
B.
Interleukin-2
C.
Interferon
D.
Lysozyme
C
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How can two cells of a complex multicellular organism have the same genome, but markedly different structures and functions?
A. During differentiation, as cells become specialized, they lose portions of their genome that are no longer needed. B. Different genes are expressed in different cells. C. Part of the process of differentiation of cells involves mutations in the genome. D. Once differentiation begins, the genome no longer controls cellular functions.
Which of the following is not a causative agent of acute encephalitis?
A. Toxoplasma gondii B. Varicella-zoster virus C. JC virus D. Arbovirus E. Herpes simplex virus
Ovules develop within the ovary, which is located in the swollen lower portion of which floral organ?
A. stamen B. stigma C. anther D. filament E. pistil
Which of the following is least likely to result in a release of epinephrine (adrenaline) from the adrenal glands?
A. Competing in an athletic event B. going out on a first date C. Falling asleep during a lecture D. Swimming in a very cold pool E. taking a test while unprepared