An island in the Rock River would be an example of a(n)

Which complement cascade takes the longest to become activated?  (needs antibodies)

Which receptor on naive B-cells inhibits them from being activated during a secondary adaptive immune response?

During a secondary adaptive immune response, which of the following receptors would you expect to find on the surface of naive B-cells but not memory B-cells?

The haploid (n) number of chromosomes for humans is

In an oxidation-reduction reaction one atom loses a(n) _________ while another gains a(n) ________.

Which statement(s) are true about the figure shown?      I.  It has exactly 2 lines of symmetry.      II.  It has 90° rotational symmetry.      III.  It has 45° rotational symmetry.       iV.  It has exactly 4 lines of symmetry.

Find the length of the hypotenuse for the following triangle. (Round to the nearest thousandth.)

The current theory of the structure of the plasma membrane is best described by the ______ model.

10.  A protein & lipid sheath that imparts a white appearance to the area around an axon, produced by Schwann cells as an example, is called: