A) The person would have problems defending themselves against parasitic worm infections as well as lacking an immediate allergic response.
B) The person would be unable to activate the complement.
C) Pathogens would be able to attach to their epithelial cells much easier.
D) They would be unable to have their cells clump.
E) Their B cells would be unable to respond to antigens.
Correct Answer
verified
Multiple Choice
A) only antigen A on the surface of RBCs.
B) only antigen B on the surface of RBCs.
C) antigens A and B on the surface of RBCs.
D) antibodies A and B on the surface of RBCs.
E) only antibody A on the surface of RBCs.
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verified
Multiple Choice
A) variable region
B) constant region
C) heavy chain
D) light chain
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verified
True/False
Correct Answer
verified
Multiple Choice
A) all B cells are exact clones of one another.
B) all T cells are exact clones of one another.
C) when a B or T cell is activated by binding to/recognizing an antigen, then that cell will be cloned into cells that recognize the same antigen.
D) when a B or T cell is stimulated by encountering the correct antibody, it divides to form a clone of cells that will respond to the same antibody.
E) T cells are stimulated by B cells to divide and form plasma cells, which secrete antibodies.
Correct Answer
verified
Essay
Correct Answer
verified
View Answer
True/False
Correct Answer
verified
Multiple Choice
A) Side effects can be life-threatening.
B) The therapies are still untested.
C) The treatments are very expensive.
D) The therapies only work for women.
E) The therapies only work for men.
Correct Answer
verified
Essay
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verified
View Answer
Multiple Choice
A) cannot survive.
B) cannot synthesize red blood cells.
C) cannot synthesize white blood cells.
D) may need antibiotic therapy.
E) may need blood transfusions to prevent anemia.
Correct Answer
verified
Multiple Choice
A) tonsils
B) lymph nodes
C) spleen
D) bone marrow
E) thymus
Correct Answer
verified
Multiple Choice
A) The lymphatic system protects the body from disease.
B) The lymphatic system returns excess tissue fluid to the bloodstream.
C) The fluid inside lymphatic vessels is called lymph.
D) The lymphatic system absorbs fats at the villi and transports them to the bloodstream.
E) All of the answer choices correctly describe the lymphatic system.
Correct Answer
verified
Multiple Choice
A) excreted by the kidneys.
B) returned to the circulatory system via arteries.
C) returned to the circulatory system via the subclavian veins.
D) absorbed by tissues.
E) excreted as sweat.
Correct Answer
verified
Multiple Choice
A) hemorrhoids.
B) phlebitis.
C) anemia.
D) angina.
E) edema.
Correct Answer
verified
Multiple Choice
A) an autoimmune disease
B) systemic lupus erythematosus
C) multiple sclerosis
D) AIDS
E) SCID
Correct Answer
verified
Multiple Choice
A) will either consist of a constant region or a variable region.
B) forms an X-shaped protein molecule.
C) contains an antigen-binding site on each arm.
D) contains four light chains and two heavy chains.
E) contains constant regions that bind to the antigen.
Correct Answer
verified
Multiple Choice
A) IgA
B) IgD
C) IgE
D) IgG
E) IgM
Correct Answer
verified
True/False
Correct Answer
verified
Multiple Choice
A) An antigen selects certain B cells to produce a clone of plasma cells.
B) An antibody stimulates the multiplication of B cell antigens against it.
C) T cells select those B cells that should produce antibodies, regardless of antigens.
D) T cells suppress all the B cells except the ones that should multiply and divide.
E) One B cell will give rise to plasma cells that produce antibodies against several antigens.
Correct Answer
verified
Multiple Choice
A) helper T cells.
B) suppressor T cells.
C) cytotoxic T cells.
D) memory T cells.
E) B cells.
Correct Answer
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