Worksheet Chapter 11: Immunity in Humans

1. Explain the role of histamine in the inflammatory response following skin damage.

2. Explain how the Human Immunodeficiency Virus (HIV) causes Acquired Immunodeficiency Syndrome (AIDS).

3. Which action of antibodies involves clumping pathogens together into a mass to facilitate phagocytosis?

4. Describe the main steps involved in the process of phagocytosis carried out by a macrophage.

5. Differentiate between the antibody mechanisms of Opsonisation and Neutralisation.

6. Fill in the blank: The Y-shaped protective proteins secreted by plasma cells in response to specific antigens are called ________.

7. True or False: Artificially acquired passive immunity provides long-lasting immunity because memory B cells are produced.

8. Name two physical or chemical barriers that constitute the body's First Line of Defence.

9. Compare and contrast Vaccination (Active Immunity) and Antiserum Injection (Passive Immunity) in terms of immediate protection and duration of immunity.

10. True or False: Phagocytosis is a specific immune response that targets only one unique pathogen strain.