U2T9 – The Immune Response

Name the molecules that generate an immune response when detected by the body. Type your answer.

Which type of cell can engulf a pathogen?

During phagocytosis, the pathogen is detected by molecule A on the cell surface membrane. What are the molecules labelled A called?

On the diagram above, which structure is a phagosome?

On the diagram above, which structure is a lysosome?

Name the contents found in C.

Digested pathogen proteins can be displayed on the cell surface membrane of a phagocyte. What is this called?

Type your answer.

Which type of cell activates other immune cells in an immune response?

Which type of cell travels to the site of infection, and secretes a chemical which kills infected cells?

What happens to a B lymphocyte when it is activated?

True or False - Plasma cells are clones.

True or False - Each B cell has an antibody with a different shaped variable region on its membrane.

What is it called when the two variable regions of an antibody form a complex with two pathogens?

Type your answer.

Which is the variable region on the above diagram?

On the above diagram, where would an antigen bind?

What is the primary function of a vaccination?

NMO is a disease NMO is a disease that leads to damage to nerve cells in the spinal cord. A person with NMO produces anti-AQP4 antibody that attacks only these nerve cells. Explain why the anti-AQP4 antibody only damages these cells

A doctor vaccinated a group of patients against poliomyelitis. He gave each patient two doses of vaccine, 3 months apart. Calculate the percentage increase in the mean concentration of antibodies in blood between samples 2 and 3.

A doctor vaccinated a group of patients against poliomyelitis. He gave each patient two doses of vaccine, 3 months apart. Explain the differences between the mean concentrations of antibodies in blood samples 1 and 2 .

A doctor vaccinated a group of patients against poliomyelitis. He gave each patient two doses of vaccine, 3 months apart. Explain the differences between the mean concentrations of antibodies in blood samples 2 and 3.