Reference no: EM133297350
Questions
1. How do memory cells develop?
a. Innate cells modify their cell surface receptors to prepare for reinfection.
b. T cells and B cells after the primary response to form cells that persist and become reactivated.
c. T cells and B cells from the primary infection slowly mutate their receptors over time, priming themselves for the secondary response.
d. Innate cells are trained to activate new T cells and B cells more quickly with secondary infection.
2. What is NOT true of Oncogenes ___________
a. they have been found to be normal genes that provide cellular function
b. they promote uncontrolled cell growth.
c. they could be found in some viruses
d. are mutated form found in cancer cells.
3. Chronic graft rejection consists of_______________
a. none are correct.
b. when antibody attach to the cells inducing phagocytosis.
c. when host T cells are stimulated, when they attack the graft.
d. when host B cells are stimulated, when they attack the graft.
4. What is NOT true about Hashimoto's thyroiditis ?
a. it is a type III hypertensive response
b. it leads to hypothyroidism.
c. is more common in women than in men.
d. it is a type II hypertensive response
5. What is the primary mechanism for establishing self-tolerance found in primary lymphoid tissues?
a. Individuals that have immune systems that respond to self-antigens do not survive to reproduce.
b. Certain immune suppressive cytokines are maintained in tissues to dampen auto reactive immune responses.
c. Self-reactive T cells and B cells are killed via apoptosis during development.
d. Immune cells that react to self-antigens are turned off when they recognize self-tissues.
6. Which of the following is NOT true about Myasthenia gravis?
a. leads to weakness of muscle cells
b. antibody targets the enzyme acetyl-cholinesterase
c. targets the neuromuscular junction
d. antibody target the acetylcholine receptor
7. A tissue graft will be rejected due to which of the following?
a. the tissue is an isograft
b. when there is a TH2 response
c. due to activity of TH17 cells
d. when there is no trigger that promotes immune response
8. Pattern-recognition receptors on antigen presenting cells
a. both coordinate killing of pathogens and recognize specific pathogens.
b. capture pathogens and alert the adaptive immune system of an infection.
c. coordinate killing of pathogens.
d. alert the adaptive immune system of an infection.
9. Why is Anaphylaxis fatal?
a. smooth muscle contraction and lowered blood pressure.
b. immune complex deposition on blood vessels.
c. the formation of tight junctions in the vascular endothelium.
d. relaxation of airway smooth muscle, which prevents air flow.
10. A patient that is unable to produced IgE would experience ?
a. Rampant helminthic infection
b. Problems with chronic inflammation
c. A lack of allergies and asthma
d. Recurrent viral infections