Question 1

What is the blood type of individuals who lack antigens on their red blood cell surfaces?

Accepted Answer

A) A,Rh+ 
B) B,Rh+ 
C) AB,Rh- 
D) O,Rh-. 
E) O,Rh+ 
A) A,Rh+ 
B) B,Rh+ 
C) AB,Rh- 
D) O,Rh-. 
E) O,Rh+

Question 2

The cell-mediated immune response is brought about by which cells?

Accepted Answer

A) B cells 
B) T cells 
C) erythrocytes 
D) fibroblasts 
E) lysozymes 
A) B cells 
B) T cells 
C) erythrocytes 
D) fibroblasts 
E) lysozymes

Question 3

What is the name for molecules that provoke a specific immune response?

Accepted Answer

A) antigens 
B) lymphocytes 
C) antibodies 
D) lysozymes 
A) antigens 
B) lymphocytes 
C) antibodies 
D) lysozymes

Question 4

Select the immunoglobin (Ig)classes that is correctly matched to their facts.Check all that apply.

Accepted Answer

A) IgA-found in saliva,tears,the GI tract,and mother's milk 
B) IgD-serve as receptors on the surfaces of T cells 
C) IgE-promotes the release of histamine from mast cells and basophils,causing allergy symptoms 
D) IgG-a minor form of immunoglobulin,used only in response to parasitic worms 
E) IgM-first secreted during primary response,promotes agglutination,activates complement 
A) IgA-found in saliva,tears,the GI tract,and mother's milk 
B) IgD-serve as receptors on the surfaces of T cells 
C) IgE-promotes the release of histamine from mast cells and basophils,causing allergy symptoms 
D) IgG-a minor form of immunoglobulin,used only in response to parasitic worms 
E) IgM-first secreted during primary response,promotes agglutination,activates complement

Question 5

Which of the following is true regarding cytokines?

Accepted Answer

A) Cytokines are secreted by TH cells and bind to receptors. 
B) Cytokines are immune cells involved in producing antibodies. 
C) Cytokines are secreted by pathogens during infection. 
D) Cytokines bind to intracellular receptors. 
E) Cytokines protect in the attack of pathogens by phagocytosis. 
A) Cytokines are secreted by TH cells and bind to receptors. 
B) Cytokines are immune cells involved in producing antibodies. 
C) Cytokines are secreted by pathogens during infection. 
D) Cytokines bind to intracellular receptors. 
E) Cytokines protect in the attack of pathogens by phagocytosis.

Question 6

Lymphocyte receptors are encoded by genes that are assembled by rearrangement and mutation of what molecules?

Accepted Answer

A) pre-mRNA 
B) mRNA 
C) tRNA 
D) DNA 
A) pre-mRNA 
B) mRNA 
C) tRNA 
D) DNA

Question 7

What cells are the precursors of macrophages?

Accepted Answer

A) B cells 
B) macrophages 
C) plasma cells 
D) T cells 
E) monocytes 
A) B cells 
B) macrophages 
C) plasma cells 
D) T cells 
E) monocytes

Question 8

The surface defenses of the body consist of the ________ and the mucous membranes lining the digestive and respiratory tracts.

Accepted Answer

A) bone marrow 
B) skin 
C) T cells 
D) lymphocytes 
A) bone marrow 
B) skin 
C) T cells 
D) lymphocytes

Question 9

You sit next to Uncle Ed,an immunologist,at Thanksgiving dinner."I'm a 'big eater'",he says,"just like the cells I study." What are the large cells that engulf pathogens that Uncle Ed works with?

Accepted Answer

A) monocytes 
B) erythrocytes 
C) macrophages 
D) bacteriophages 
E) antibodies 
A) monocytes 
B) erythrocytes 
C) macrophages 
D) bacteriophages 
E) antibodies

Exam 50: The Immune System

What is the blood type of individuals who lack antigens on their red blood cell surfaces?

The cell-mediated immune response is brought about by which cells?

What is the name for molecules that provoke a specific immune response?

Select the immunoglobin (Ig)classes that is correctly matched to their facts.Check all that apply.

Which of the following is true regarding cytokines?

Lymphocyte receptors are encoded by genes that are assembled by rearrangement and mutation of what molecules?

What cells are the precursors of macrophages?

The surface defenses of the body consist of the ________ and the mucous membranes lining the digestive and respiratory tracts.

You sit next to Uncle Ed,an immunologist,at Thanksgiving dinner."I'm a 'big eater'",he says,"just like the cells I study." What are the large cells that engulf pathogens that Uncle Ed works with?

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