I’m working on a Biology question and need guidance to help me study.

  1. What are the different portals of entry for a pathogen to enter the body?

  1. Differentiate between active and passive types of immunity. Which type of immunity is long lasting and which is short lasting?
  1. Discuss the five (5) different classes of vaccines used in active immunity.
  1. Define and differentiate between hypersensitivity reactions and autoimmune disease. Gives an example of hypersensitivity reaction and an example of an autoimmune disease: