Fivth Week

Question 1

Question text

Which of the following cells load peptide fragments into MHC-IImolecules?

Select one:

a. Dendritic cells
b. CD8+T cells
c. CD4+T cells
d. Neutrophils

Answer 1

Dendritic cells

Question 2

The most effective APC for effector T cells in humoral immune response is the

Select one:

a. macrophage
b. Neutrophil
c. B lymphocyte
d. dendriticcell

Answer 2

c.B lymphocyte

Question 3

The mosteffective APC for effector T cells in cell-mediated immune response is the

Select one:

a. B lymphocyte
b. dendritic cell

c..
The mosteffective APC for effector T cells in cell-mediated immune response is the

Select one:

a. B lymphocyte
b. dendritic cell
c. macrophage
d. Neutrophil

Answer 3

macrophage

Question 4

Peptides antigens generated in intracellular infections bind to ____ MHC molecules for presentation to ____ T cells

Select one:

a. Class I; CD4+
b. Class II; CD4+
c. Class I; CD8+
d. Class II; CD8+

Answer 4

Class I; CD8+

Question 5

Peptide antigens generated in extracellular infection bind to ____ MHC molecules for presentation to ____ T cells

Select one:

a. Class I; CD8+
b. Class II; CD4+
c. Class II; CD8+
d. Class I; CD4

Answer 5

Class II; CD4+

Question 6

B cell has a receptor on its surface which is

Select one:

a. Dimeric IgM
b. Monomeric IgG
c. B cell receptor
d. Monomeric IgM

Answer 6

Monomeric IgM

Question 7

Which of the following acts as a coreceptor for B-cell activation

Select one:

a. IL-2
b. IgA
c. CD28
d. CD19

Answer 7

CD19(surface marker)

Question 8

The interaction of which molecule on the membrane of cells with its ligand signals B cell activation

Select one:

a. Fc receptor
b. CD40
c. B7
d. MHC-II
e. Fas

Answer 8

CD40