Chapter 4 Immuno

Which of the following is NOT a class of antibodies?

• IgG

• IgA

• IgM

• IgX

What type of cells produce antibodies in response to infection?

• T lymphocytes

• B lymphocytes

• Red blood cells

• Platelets

Where do antibodies primarily circulate in the body?

• In the liver

• In the plasma of blood and lymph

• In the kidneys

• In the stomach

Which of the following are the most common types of antigens?

• Lipids and nucleic acids

• Proteins and carbohydrates

• Vitamins and minerals

• Water and salts

What are antibodies more generally known as?

• Antigens

• Immunoglobulins

• Plasma cells

• B cells

What do mature B cells express on their surface?

• Antigens

• Plasma cells

• Immunoglobulins (Igs)

• T cells

What happens when an antigen binds to immunoglobulins?

• The B cell dies

• The B cell proliferates and differentiates into a plasma cell

• The B cell becomes inactive

• The B cell secretes antigens

What do plasma cells secrete?

• Antigens

• T cells

• Antibodies with the same specificity as the membrane-bound Igs

• Red blood cells

Diagram showing the process of B cell activation and differentiation into plasma cells.

• B cells are activated by antigens and differentiate into plasma cells.

• B cells directly become memory cells without activation.

• B cells are activated by T cells and differentiate into macrophages.

• B cells are activated by cytokines and differentiate into dendritic cells.

What enzyme cleaves the IgG molecule into three pieces?

• Trypsin

• Papain

• Pepsin

• Chymotrypsin