Immunology

Cells that ingest pathogens are

• plasma cells
• phagocytic cells
• helper T cells
• antibodies

T cells are made in the___________

• bone marrow
• spleen
• thymus
• tonsiles

Anything that triggers an immune response is a/n

• lymph cell
• antigen
• antibody
• neutrop

B cells mature in the

• thymus
• intestine
• bone marrow
• heart

Where do T cells mature?

• lymph node
• bone marrow
• thymus
• liver

Which cell recognizes a pathogen?

• helper t-cells

• killer t-cells

• suppressor t-cells

• memory t-cells

Which cell produces antibodies?

• t-cells

• helper t-cells

• plasma cells

• killer t-cells

A type of T cell that destroys infected cells is a:

• cytotoxic T cell
• helper T cell
• memory T cell
• suppressor T cell

Virus replication may be slowed down by the natural production or administration of this signaling protein:

• interferon
• histamine
• plasma cell
• antibodies

The graph shows the antibody levels in the blood after a person has been exposed twice to the same pathogen. With regard to this pathogen we can conclude that

• the person has a deficient immune response.

• the virulence of the pathogen increased between the first and second exposures.

• antibodies are only produced after a second exposure to the pathogen.

• memory cells for antibodies against the pathogen exist at the time of the second exposure.