Binding of an eosinophil to an antibody-coated parasitic worm involves binding of the antibody's stem region to a(n) .

plasma membrane protein on the eosinophil's surface

Explanation:

Eosinophils sometimes called acidophils are a part of the immune system. The responsible for fighting viral infections and parasites. Eosinophils expresses IgE- binding protein and a protein toxin, cathepsin on the plasma memberane surface along with the SNARE complexes.

Therefore, binding of an eosinophil to an antibody-coated parasitic worm involves binding of the antibody's stem region to a plasma membrane protein on the eosinophil's surface.

the statements that apply here about binary star system are

"have stars that might appear to wobble"

"often have one star that is brighter than other"

a binary star is a star system consisting of two stars revolving around their common barycenter. systems of two or more stars are called multiple star systems.