Recombinant human monoclonal antibody (rhuMAb)
A. appears promising as a treatment for asthma.
B. decreases the levels of IgG.
C. uses an engineered form of an IgG molecule.
D. promotes crosslinking between IgE molecules on the mast cells.
E. appears promising as a treatment for asthma AND uses an engineered form of an IgG molecule.
E
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0.2 mls of a 10-4 dilution of a virus preparation yields 90 plaques. What is the number of PFU per ml in the undiluted virus preparation?
A. 9.0 × 108 B. 4.5 × 106 C. 4.5 × 107 D. 9.0 × 105
Altitude sickness
a. results from hypoxia. b. is characterized by hyperventilation. c. is characterized by nausea. d. is characterized by an accelerated heart rate. e. includes all of these
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 choices adequately describe microbial death.
A zygote (i.e., a fertilized egg) undergoes development to grow. What mechanism is used to generate more cells?
A) Fertilization B) Binary fission C) Meiosis D) Mitosis