Question

All the answers please,.

Question 23 (2 points)

How many Fab fragments are found on one IgG antibody?

Question 23 options:

	A) 1
	B) 3
	C) 2
	D) 4
	E) 10

Question 24 (2 points)

Which of the following is more likely to be loaded with endogenous (intracellular) peptide?

Question 24 options:

	A) MHC class II
	B) MHC class I
	C) CD28
	D) T cell receptor

Question 25 (2 points)

Which antibody can cross epithelial layers to enter the intestinal lumen?

Question 25 options:

	A) IgM
	B) IgA
	C) IgE
	D) IgD
	E) IgG

Question 26 (2 points)

Which of the following is another general word for a white blood cell?

Question 26 options:

	A) erythrocyte
	B) lymphocyte
	C) myocyte
	D) hepatocyte
	E) leukocyte

Question 27 (2 points)

Which receptor listed below is capable of recognizing C3d?

Question 27 options:

	A) CR2
	B) CD2
	C) CD4
	D) CD28

Question 28 (2 points)

These cells release histamine from granules after antigen crosslinks surface IgE:

Question 28 options:

	A) NK cells
	B) Macrophages
	C) Mast cells
	D) Neutrophils

Question 29 (2 points)

The alternative pathway for complement activation is different from the classical pathway in that

Question 29 options:

	A) antibodies must bind to the target before the alternative pathway complement cascade is initiated.
	B) only the alternative pathway can lead to the formation of a MAC
	C) cytotoxic T cells must first bind to a target cell to initiate the classicalcomplement pathway.
	D) antibodies are NOT required for initiation of the alternative pathway complement cascade.

Question 30 (2 points)

For T cells, positive selection takes place primary in the_________ and negative selection primarily occurs in the_________.

Question 30 options:

	A) thymus, secondary lymphoid tissues
	B) thymus, thymus
	C) secondary lymphoid tissues, thymus
	D) thymus, bone marrow
	E) bone marrow, thymus
	F) bone marrow, bone marrow

Question 31 (2 points)

Activation of a naïve cytotoxic T cell probably involves a T_H cell and a__________ .

Question 31 options:

	A) dendritic cell
	B) basophil
	C) neutrophil
	D) eosinophil
	E) B-cell

Question 32 (2 points)

Which T cell contains perforin and Granzyme B in granules for killing target cells?

Question 32 options:

	A) NK cells
	B) Cytotoxic T cells
	C) TH2 cells
	D) Treg cells
	E) TH1 cells

Question 33 (2 points)

MHC self-restriction refers to the fact that   

Question 33 options:

	A) T cell exposure to an antigenic peptide should occur in the context of a self-MHC in order to activate the T cell
	B) MHC allelic exclusion prevents further MHC recombination
	C) B cell activation cannot occur after T cell exposure to an MHC
	D) none of the above

Question 34 (2 points)

Which of the following molecules listed below is most unique to a T-cell (i.e. not found on B-cells or other immune cells)?

Question 34 options:

	A) CD28
	B) BCR
	C) B-7
	D) TLR

Answer 1

Answer

23 . C). 2.

24. A). MHC class II.

25.  B). IgA.

26. E). leukocyte.

27. A). CR2.

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