Which of the following is not a viral order in the classification system?
A. Caudovirales
B. Mononegavirales
C. Vaccinia virus
D. Nidovirales
Answer: C
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Which of the following represents the best definition for microbial death?
A. The organism no longer retains its original shape and structures. B. The organism will not grow on minimal medium. C. The organism will not grow on a medium that normally supports its growth. D. None of these adequately describe microbial death.
Following its initial activation, how does a G protein become inactivated?
A. It spontaneously loses activity within a few seconds. B. The G-protein ? subunit containing a GTP eventually reassociates with the G-protein ?? dimer. C. The G-protein ? subunit GTP is hydrolyzed to GDP allowing reassociation of the G-protein ? subunit and ?? dimer. D. The receptor becomes internalized. E. The G-protein ? subunit is digested and recycled.
Morphological divergence ____
a. is the change in body form from that of a common ancestor b. is the change in body form to resemble that of an ancestor c. implies no change in body form over time d. does not occur in related species e. only occurs in unrelated species
The molecular weight of an intermediate filament is:
a. 45 kDa b. 42 kDa c. 66 kDa d. 55 kDa e. None of the above