Adaptive Part 1

Which type of immunity primarily protects against bacteria and viruses?

• Humoral immunity

• Cell mediated immunity

• Innate immunity

• Passive immunity

What is the role of T-cytotoxic cells (Tc) in cell mediated immunity?

• Attack invaders outside the cell

• Differentiate into B cells

• Attack infected cells

• Produce antibodies

Where does clonal diversity occur?

• Secondary lymphoid organs

• Primary lymphoid organs

• Bloodstream

• Skin

What is the primary role of antigen-presenting cells (APCs) in clonal selection?

• Produce antibodies

• Attack infected cells

• Process and present antigens to immune cells

• Differentiate into T cells

Which type of immunity involves B cells and circulating antibodies?

• Cell mediated immunity

• Humoral immunity

• Innate immunity

• Passive immunity

What is the primary function of T-cytotoxic cells (Tc)?

• Produce antibodies

• Attack invaders outside the cell

• Stimulate the activity of other leukocytes

• Differentiate into B cells

Which of the following is NOT a peripheral (secondary) lymphoid tissue?

• Thymus

• Lymph nodes

• Spleen

• Tonsils

What is the main characteristic of passive acquired immunity?

• Pre-formed antibodies or T lymphocytes are transferred from a donor

• Antibodies or T cells are produced after exposure to an antigen

• Long-lived memory cells

• Occurs only naturally

What is an antigen?

• A molecule that can react with antibodies or receptors on B and T cells

• A type of white blood cell

• A protein that inhibits immune response

• A molecule that destroys pathogens

What is the antigen's binding site called?

• Antigenic determinant (epitope)

• Antigen-binding site (paratope)

• Receptor site

• Binding domain