Multiple Choice

Antibodies are produced by ________.

1. plasma cells
2. T cells
3. bone marrow
4. Macrophages

Cellular adaptive immunity is carried out by ________.

1. B cells
2. T cells
3. bone marrow
4. neutrophils

A single antigen molecule may be composed of many individual ________.

1. T-cell receptors
2. B-cell receptors
3. MHC II
4. epitopes

Which class of molecules is the most antigenic?

1. polysaccharides
2. lipids
3. proteins
4. carbohydrates

MHC I molecules present

1. processed self-antigens from proteasomes.
2. processed foreign antigens from phagolysosome.
3. antibodies.
4. T cell antigens.

MHC II molecules present

1. processed self-antigens from proteasomes.
2. processed foreign antigens from phagolysosomes.
3. antibodies.
4. T cell receptors.

Which type of antigen-presenting molecule is found on all nucleated cells?

1. MHC II
2. MHC I
3. antibodies
4. B-cell receptors

Which type of antigen-presenting molecule is found only on macrophages, dendritic cells, and B cells?

1. MHC I
2. MHC II
3. T-cell receptors
4. B-cell receptors

What is a superantigen?

1. a protein that is highly efficient at stimulating a single type of productive and specific T cell response
2. a protein produced by antigen-presenting cells to enhance their presentation capabilities
3. a protein produced by T cells as a way of increasing the antigen activation they receive from antigen-presenting cells
4. a protein that activates T cells in a nonspecific and uncontrolled manner

To what does the TCR of a helper T cell bind?

1. antigens presented with MHC I molecules
2. antigens presented with MHC II molecules
3. free antigen in a soluble form
4. haptens only

Cytotoxic T cells will bind with their TCR to which of the following?

1. antigens presented with MHC I molecules
2. antigens presented with MHC II molecules
3. free antigen in a soluble form
4. haptens only

A ________ molecule is a glycoprotein used to identify and distinguish white blood cells.

1. T-cell receptor
2. B-cell receptor
3. MHC I
4. cluster of differentiation

Name the T helper cell subset involved in antibody production.

1. T_H1
2. T_H2
3. T_H17
4. CTL

Which of the following would be a T-dependent antigen?

1. lipopolysaccharide
2. glycolipid
3. protein
4. carbohydrate

Which of the following would be a BCR?

1. CD4
2. MHC II
3. MHC I
4. IgD

Which of the following does not occur during the lag period of the primary antibody response?

1. activation of helper T cells
2. class switching to IgG
3. presentation of antigen with MHC II
4. binding of antigen to BCRs

A patient is bitten by a dog with confirmed rabies infection. After treating the bite wound, the physician injects the patient with antibodies that are specific for the rabies virus to prevent the development of an active infection. This is an example of:

1. Natural active immunity
2. Artificial active immunity
3. Natural passive immunity
4. Artificial passive immunity

A patient gets a cold, and recovers a few days later. The patient's classmates come down with the same cold roughly a week later, but the original patient does not get the same cold again. This is an example of:

1. Natural active immunity
2. Artificial active immunity
3. Natural passive immunity
4. Artificial passive immunity