Multiple choice The function of bindin (a protein) in the acrosomal process is to prevent more than one sperm from entering the egg digest the vitelline layer ensure that the egg is being fertilized by a sperm of the same species sever the sperm's tail Reveal answer Fill a bubble to check yourself C Correct answer Explanation Bindin is a species-specific protein found on the acrosomal process of sperm that recognizes and binds to receptors on the egg's vitelline membrane. This mechanism ensures that fertilization occurs only between gametes of the same species.