Which of the following have no effective dipole moment?
A. entirely polar molecules
B. entirely nonpolar molecules
C. proteins
D. nucleic acids
E. All of these molecules have no effective dipole moment.
B
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The MPF protein complex turns itself off by _____
A) activating a process that destroys cyclin components B) activating an enzyme that stimulates cyclin C) binding to chromatin D) exiting the cell E) activating the anaphase-promoting complex
Most of Europe is in the ______ biome.
A. high mountain B. taiga C. temperate deciduous forest D. tundra E. None of the choices are correct.
How do cytokines function?
A. They bind directly to microbes to enhance their chance of being ingested (phagocytosed). B. They are secreted in the phagolysosomes of neutrophils to effect killing of ingested microbes. C. They are secreted by one cell type. They then bind to a receptor on target cell causing a signal within that cell that turns on (or off) certain genes to achieve a response. D. They work as a series of serum proteins to produce a hole in microbes to directly lyse them.
The indirect ELISA test detects ______ in a patient's blood.
A.) antigen B.) antibody C.) microorganisms D.) IgE only E.) complement