Question

81) What is the name of the process where MHC molecules of an infected cell display antigens from a pathogen on their cell surface so T cells can identify and destroy the infected cell?

1. Homeostasis
2. Gene rearrangement
3. Excretion
4. Antigen presentation

82) What is the name of the genetic mechanism that allows B cells or T cells to produce specific antibodies?

1. Homeostasis
2. Gene rearrangement
3. Excretion
4. Antigen presentation

83) Which below describes the Humoral Immune Response

A) involves activation and clonal selection of Cytotoxic T cells

B) involves activation and clonal selection of B cells, resulting in production of secreted antibodies

C) Lymphocytes are screened for host reactivity in the Thymus gland

84) Which below describes the Cell Mediated Immune Response

A) involves activation and clonal selection of cytotoxic T cells

B) involves activation and clonal selection of B cells, resulting in production of secreted antibodies

C) Lymphocytes are screened for host reactivity in the Thymus gland

85) Occurs when a pathogen can no longer infect a host because it is bound to an antibody

A) Neutralization

B) Opsonization

C) Excretion

D) Plasmolysis

86) Occurs when antibodies bound to antigens increases phagocytosis of foreign cells by the immune system

A) Neutralization

B) Opsonization

C) Excretion

D) Plasmolysis

87) The process where Antibodies cause lysis of foreign cells is called

A) Neutralization

B) Opsonization

C) Plasmolysis

D) Activation of the complement system

Match the following 3 terms to the description(s) of function(s) below

A) Antigen presentation      B) Antigen switching C) Clonal selection    D) Self screening E) Complement System

110) Pathogens such as Plasmodium evade human adaptive immunity with this mechanism

111) Following antibody/antigen match, a B cell or T cell proliferates with the help of cytokines from a matching Helper T-Cell

112) B cells or T cells with self-reactive antibodies undergo apoptosis

113) A dendritic cell or macrophage stimulates B cells or T cells that have matching antibodies

114) B plasma cell antibodies cause destructions of targets by this mechanism

Answer 1

81. Antigen Presentation

• Homeostasis is the process by which body maintains normal, healthy ranges for things like temperature, energy intake and growth. The immune response plays an important role in maintaining homeostasis by preparing the body to fight off infections and to help the healing process.
• Gene rearrangement is the name of genetic mechanism that allows B cells or T cells to produce specific antibodies.
• Excretion is responsible for the removal of wastes produced by homeostasis and is necessary for proper functioning of immune system.