What type of materials are expelled from cells during exocytosis

During exocytosis cells expel a variety of materials including waste products, toxins and large molecules such as hormones, proteins and neurotransmitters into the extracellular environment.

Explanation:

Waste Products, Toxins, and large molecules like hormones, proteins and neurotransmitters

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.