Adaptive Immune System

Adaptive body defenses are considered which line of defense in the body?

• First line of defense

• Second line of defense

• Third line of defense

• Fourth line of defense

What is the primary difference between humoral immunity and cellular immunity?

• Humoral immunity is provided by antibodies in body fluids, while cellular immunity targets virus-infected cells and cancer cells

• Humoral immunity targets bacteria, while cellular immunity targets parasites

• Humoral immunity involves physical barriers, while cellular immunity involves chemical barriers

• Humoral immunity is a non-specific response, while cellular immunity is a specific response

Which of the following is an example of an antigen?

• Vitamins

• Hormones

• Proteins

• Water molecules

What is the role of lymphocytes in the adaptive defense system?

• They help the immune system but do not respond to specific antigens

• They present antigens to T cells after engulfing them

• They respond to specific antigens and are crucial cells of the adaptive system

• They restrict donors for transplants

Which cells develop immunocompetence in the thymus and oversee cell-mediated immunity?

• B lymphocytes

• Antigen-presenting cells (APCs)

• T lymphocytes

• Dendritic cells

What is the function of antigen-presenting cells (APCs)?

• They oversee cell-mediated immunity

• They produce antibodies

• They activate T cells by presenting antigens

• They restrict donors for transplants

Which of the following are major types of cells that behave as APCs?

• T lymphocytes and B lymphocytes

• Dendritic cells and macrophages

• Hemocytoblasts and lymphocytes

• B lymphocytes and T lymphocytes

What is the primary role of macrophages in the immune response?

• To produce antibodies

• To phagocytize pathogens

• To secrete hormones

• To undergo clonal selection

Which cells are primarily responsible for the production of antibodies during the immune response?

• T lymphocytes

• Macrophages

• B lymphocytes

• Dendritic cells

How long does the activity of plasma cells typically last in the humoral immune response?

• 1-2 days

• 4-5 days

• 7-10 days

• 2-3 weeks