1. What is an acrosomal reaction after egg and sperm firstcontact? What molecular interaction activates the acrosomalreaction? What is the purpose of acrosomal reaction?
2. What proteins on sperm tether the sperm to egg vitellineenvelope? What would the consequence if this protein loses itsspecificity? (20 points)
3. What is polyspermy? What is the consequence ofpolyspermy?
4. What is the mechanism for fast block to polyspermy? Whatwould be the influence on fertilization if the sodium concentrationin the environment where fertilization occurs is too low?
