Which of the following choices are true about the dyes fluorescein and rhodamine?
A.) They can be used to label antibodies in immunofluorescence tests.
B.) They emit visible light in response to ultraviolet radiation.
C.) They are observed in the fluorescent microscope.
D.) They are used to identify pathogens of chlamydiosis, Legionnaires'disease, and others.
E. All of these choices are correct.
E.) All of these choices are correct.
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Marathon runners tend to have a high percentage of ____ in their leg muscles
a. slow, red fibers b. slow, white fibers c. fast, red fibers d. fast, white fibers e. both red and white fibers
The critical function of the sodium-potassium pump of neurons is to move
A. Na+ and K+ into the cell and H+ out of the cell through an antiport mechanism. B. Na+ and K+ out of the cell. C. Na+ and K+ into the cell. D. Na+ out of the cell and K+ into the cell. E. Na+ into the cell and K+ out of the cell.
A division of fungi that lacks septa in their hyphae except when they form sporangia or gametangia is the
A. ascomycetes. B. chytridomycetes. C. zygomycetes. D. basidiomycetes.
Which immunoglobulin is able to pass the placenta to protect the fetus from pathogens?
a. IgG b. IgA c. IgD d. IgM e. IgE