disease and immunity

What type of white blood cell can be seen here?

• neutrophil

• macrophage

• lymphocyte

An antigen on a cell in the body is a ....................... antigen whereas on a foreign cell it is called a ..........................antigen

(a)  

these cells act as antigen-presenting cells, and travel in the blood as monocytes

• macrophages

• neutrophils

• B lymphocyte

• T lymphocyte

a chemical released by cells under attack which attract neutrophils to the site of infection

• hydrogen peroxide

• antibody

• histamine

• antigens

the following are types of T lymphocytes

• T killer cells

• T helper cells

• T memory cells

• T worker cells

These lymphocytes mature in the bone marrow and then spread throughout the body

• B lymphocytes

• T lymphocytes

• phagocytes

• neutrophils

When a B cell with a receptor complementary to the antigen of an invading pathogen is stimulated to divide by mitosis it is called (a)  

The extensive RER in a plasma cell is useful for making

• memory cells

• antibodies

• histamine

The secondary response to a pathogen is:

• faster

• stronger

• more accurate

• slower

The antigen binding site in an antibody is specific due to

• sequence of amino acids

• sequence of antigens

• number of polypeptides