A positive direct ELISA result requires
A. one known antibody, one unknown antibody, and an unknown antigen.
B. two known antibodies and one unknown antigen.
C. two known antibodies and one known antigen.
D. one known antibody, one unknown antibody, and a known antigen.
Answer: B
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The yeasts, common molds, morels, and truffles are common and economically important and also found in the group of fungi called ___________.
Fill in the blank(s) with the appropriate word(s).
Which of the following correctly lists organization levels from the simplest to the most complex?
a. atoms, organelles, cells, tissues, organs b. atoms, molecules, tissues, organelles, organisms c. molecules, atoms, cells, organelles, tissues d. molecules, cells, organelles, organisms, organs
The net direction that an ion or molecule
moves is
a. dependent upon the size of the molecule. b. unpredictable because the movement is random. c. the result of concentration differences. d. controlled by the temperature of the medium. e. controlled by the membranes in the vicinity.
What is the cytoskeleton
What will be an ideal response?