Question 1

Which of the following describes passive immunity?

Accepted Answer

A)  antibodies transferred to the fetus from the mother across the placenta
B)  vaccination for polio
C)  allowing oneself to become infected with chicken pox
D)  vaccination for influenza

Question 2

What are the source of antibody-producing cells?

Accepted Answer

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

Question 3

In the humoral response, some B cells differentiate into plasma cells.What do plasma cells produce in large quantities?

Accepted Answer

A)  agglutinations that are specific for foreign antibodies
B)  interferons specific for foreign antigens
C)  immunoglobulins specific for foreign antigens
D)  antigens specific for foreign antibodies

Question 4

When a "new" antigen first challenges the immune system, if the primary immune response produces B cells, what are the fates of those B cells? I-Some of the B cells become plasma cells that secrete antibodies.II-Some of the B cells become memory cells and can produce a swifter response if the body encounters that particular antigen again.III-Some of the B cells secrete chemicals called pyrogens that travel to the brain inducing a fever.

Accepted Answer

A)  just II
B)  just I
C)  II and III
D)  I and II

Question 5

Unless rare antigens are present ideally, a patient needing a transfusion will receive blood of the identical blood type.But in an emergency, what blood type can be given in a transfusion to anyone?

Accepted Answer

A)  AB Rh-positive
B)  AB Rh-negative
C)  O Rh-negative
D)  O Rh-positive

Question 6

Two proteins, Rag-1 and Rag-2, catalyze VDJ recombination.Where would you expect these proteins to be expressed?

Accepted Answer

A)  thyroid and parathyroid
B)  bone marrow only
C)  bone marrow and thymus
D)  thyroid only

Question 7

Two proteins, Rag-1 and Rag-2, catalyze VDJ recombination.What is the likely outcome of a deletion of the Rag genes?

Accepted Answer

A)  mild susceptibility to infection due to T cell defects
B)  increased antibody diversity from B cells
C)  severe combined immunodeficiency (SCI
D)   of both B and T cells
D)  increased resistance to infection due to enhanced B and T cell function

Question 8

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-.

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

Question 10

A patient has come to you for a second opinion."I have these mysterious lumps in my right armpit," he says, "The other doctor says we may have to remove them.What do you think?" You notice red scratches on the patient's right arm."You must have a new kitten.Cat scratch disease, from the bacterium Bartonella ," you say, "And we certainly won't remove those lumps, they are really important! Those are your..."

Accepted Answer

A)  "thymus glands, where naive B and T cells encounter antigens and become activated."
B)  "lymph nodes, where T-cell receptor genes are rearranged as T cells mature."
C)  "lymph nodes, where naive B and T cells encounter antigens and become activated."
D)  "spleen, where hematopoietic stem cells produce lymphoid and myeloid progenitors."

Question 11

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

Question 12

In the old days, milkmaids were exposed to cowpox from milking the cows, and this fortuitously gave them some protection from smallpox.What was happening in the milkmaids?

Accepted Answer

A)  They were receiving a dose of generic IgG from the sick cows.
B)  They were effectively receiving a vaccination from a related virus.
C)  They were heightening their overall immune response due to exposure to the cowpox and other cow parasites.
D)  They had a stronger immune response from drinking the milk, which sent cow B cells circulating through their blood.

Question 13

What molecules are released by activated helper T cells?

Accepted Answer

A)  antigens
B)  immunoglobulins
C)  cytokines
D)  antibodies

Question 14

What is another term for allergy?

Accepted Answer

A)  autoimmunity
B)  antibodies
C)  hypersensitivity
D)  antigen shifting

Question 15

Which mechanism allows certain viral pathogens to evade the vertebrate immune system?

Accepted Answer

A)  becoming a symbiont
B)  becoming nonvirulent
C)  frequent changing of surface antigens
D)  becoming metabolically inactive

Question 16

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

Accepted Answer

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

Question 17

Where are MHC_II cell surface proteins found?

Accepted Answer

A)  macrophages, B cells, and dendritic cells
B)  erythrocytes
C)  acidophils
D)  neutrophils

Question 18

Which cells produce specific antibodies?

Accepted Answer

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

Question 19

Select the correct statement regarding the temperature response of the immune system.

Accepted Answer

A)  When macrophages encounter invading cells, they release immunoglobulin-1, which is carried to the brain by the circulatory system.
B)  Interleukin-1 is a pyrogen, which can cause the neurons in the hypothalamus to raise the body's temperature, producing a fever.
C)  Fever contributes to the body's defenses by stimulating hyperhidrosis and causing the liver and spleen to store magnesium.
D)  Fevers above 99  °\degree°  F are often fatal.

Question 20

What would happen to immunoglobulin genes if alternative mRNA splicing was nonfunctional?

Accepted Answer

A)  Transcripts would contain a single V region only.
B)  Transcripts would contain all possible V, D, J, and constant regions.
C)  Transcripts would have extra V, D, and J segments attached to a single constant region.
D)  Transcripts would have single V and D segments, but extra J segments and constant regions.

Exam 51: The Immune System

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

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

Which of the following describes passive immunity?

Correct Answer
verified

In the old days, milkmaids were exposed to cowpox from milking the cows, and this fortuitously gave them some protection from smallpox.What was happening in the milkmaids?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

What are the source of antibody-producing cells?

Correct Answer
verified

Which cells produce specific antibodies?

Correct Answer
verified

Two proteins, Rag-1 and Rag-2, catalyze VDJ recombination.What is the likely outcome of a deletion of the Rag genes?

Correct Answer
verified

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

Correct Answer
verified

What molecules are released by activated helper T cells?

Correct Answer
verified

What would happen to immunoglobulin genes if alternative mRNA splicing was nonfunctional?

Correct Answer
verified

In the humoral response, some B cells differentiate into plasma cells.What do plasma cells produce in large quantities?

Correct Answer
verified

Unless rare antigens are present ideally, a patient needing a transfusion will receive blood of the identical blood type.But in an emergency, what blood type can be given in a transfusion to anyone?

Correct Answer
verified

What is another term for allergy?

Correct Answer
verified

Where are MHC_II cell surface proteins found?

Correct Answer
verified

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

Correct Answer
verified

Which mechanism allows certain viral pathogens to evade the vertebrate immune system?

Correct Answer
verified

Two proteins, Rag-1 and Rag-2, catalyze VDJ recombination.Where would you expect these proteins to be expressed?

Correct Answer
verified

Select the correct statement regarding the temperature response of the immune system.

Correct Answer
verified

Exam 51: The Immune System

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

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

Which of the following describes passive immunity?

Correct AnswerverifiedShow Answer

In the old days, milkmaids were exposed to cowpox from milking the cows, and this fortuitously gave them some protection from smallpox.What was happening in the milkmaids?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

What are the source of antibody-producing cells?

Correct AnswerverifiedShow Answer

Which cells produce specific antibodies?

Correct AnswerverifiedShow Answer

Two proteins, Rag-1 and Rag-2, catalyze VDJ recombination.What is the likely outcome of a deletion of the Rag genes?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What molecules are released by activated helper T cells?

Correct AnswerverifiedShow Answer

What would happen to immunoglobulin genes if alternative mRNA splicing was nonfunctional?

Correct AnswerverifiedShow Answer

In the humoral response, some B cells differentiate into plasma cells.What do plasma cells produce in large quantities?

Correct AnswerverifiedShow Answer

Unless rare antigens are present ideally, a patient needing a transfusion will receive blood of the identical blood type.But in an emergency, what blood type can be given in a transfusion to anyone?

Correct AnswerverifiedShow Answer

What is another term for allergy?

Correct AnswerverifiedShow Answer

Where are MHC_II cell surface proteins found?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which mechanism allows certain viral pathogens to evade the vertebrate immune system?

Correct AnswerverifiedShow Answer

Two proteins, Rag-1 and Rag-2, catalyze VDJ recombination.Where would you expect these proteins to be expressed?

Correct AnswerverifiedShow Answer

Select the correct statement regarding the temperature response of the immune system.

Correct AnswerverifiedShow Answer

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