Question 1

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.F) A) and D)
G) A) and C)

Question 2

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+F) All of the above
G) C) and D)

Question 3

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)  DNAE) A) and B)
F) A) and D)

Question 4

What cells are the precursors of macrophages?

Accepted Answer

A)  B cells
B)  macrophages
C)  plasma cells
D)  T cells
E)  monocytesF) A) and C)
G) A) and B)

Question 5

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 complementF) A) and D)
G) B) and C)

Question 6

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

Accepted Answer

A)  B cells
B)  T cells
C)  erythrocytes
D)  fibroblasts
E)  lysozymesF) B) and D)
G) A) and B)

Question 7

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)  lymphocytesE) All of the above
F) B) and C)

Question 8

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)  antibodiesF) B) and C)
G) None of the above

Question 9

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

Accepted Answer

A)  antigens
B)  lymphocytes
C)  antibodies
D)  lysozymesE) All of the above
F) A) and B)

Exam 50: The Immune System

Which of the following is true regarding cytokines?

Correct Answer
verified

What cells are the precursors of macrophages?

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

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?

Correct Answer
verified

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

Correct Answer
verified

Exam 50: The Immune System

Which of the following is true regarding cytokines?

Correct AnswerverifiedShow Answer

What cells are the precursors of macrophages?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified