Immune System and Pathogen Response Quiz

What is the primary role of antibodies in the immune system?

• To create memory cells

• To mark pathogens for destruction

• To directly kill pathogens

• To produce antigens

What happens during clonal selection when a B-cell recognizes an antigen?

• The B-cell dies

• The B-cell creates plasma and memory cells

• The B-cell becomes a macrophage

• The B-cell produces antigens

How do memory cells benefit the immune system?

• They provide immediate response to new infections

• They remember past infections for faster future responses

• They directly kill pathogens

• They produce antigens

What is the function of helper T-cells in the immune response?

• To produce antibodies

• To destroy infected cells

• To activate B-cells and cytotoxic T-cells

• To create antigens

What role do antigen-presenting cells (APCs) play in the immune system?

• They create memory cells

• They produce antibodies

• They present antigens to helper T-cells

• They destroy pathogens

How do cytotoxic T-cells destroy infected cells?

• By engulfing them

• By marking them for phagocytosis

• By using perforin to create pores in cell membranes

• By producing antibodies

Which type of cells can cytotoxic T-cells target?

• Only bacterium-infected cells

• Virus-infected, bacterium-infected, and cancer cells

• Only cancer cells

• Only virus-infected cells

What is a characteristic of autoimmune diseases?

• The immune system is overly active

• The immune system attacks foreign pathogens only

• The immune system is completely inactive

• The immune system attacks the body's own cells

What is the main issue in immunodeficiency disorders?

• The immune system attacks itself

• Parts of the immune system are absent or inactive

• The immune system produces too many antibodies

• The immune system is overly sensitive

What causes the symptoms of allergies?

• A deficiency in antibody production

• A normal response to harmful antigens

• An overreaction to harmless antigens

• A lack of immune response