Podcast
Questions and Answers
What is the mechanism by which HIV enters T-helper cells?
What is the mechanism by which HIV enters T-helper cells?
- By binding to the CD4+ receptor and releasing viral RNA into the bloodstream
- By binding to the CD4+ receptor and inserting viral RNA into the host cell (correct)
- By binding to the CD8+ receptor and inserting viral RNA into the host cell
- By binding to the CD8+ receptor and releasing viral RNA into the bloodstream
Which of the following is a characteristic of Type I Immediate Hypersensitivity (Allergy)?
Which of the following is a characteristic of Type I Immediate Hypersensitivity (Allergy)?
- Occurs in organs exposed to the environment (correct)
- Triggers release of cytokines from macrophages
- Is caused by cytotoxic T cells
- Stimulates IgA producing plasma cells
What is the result of the decreased thymic hormone levels associated with aging?
What is the result of the decreased thymic hormone levels associated with aging?
- Stimulation of B-cell proliferation
- Increase in inflammatory response
- Enhanced spread of infection
- Decrease in cell-mediated immunity (correct)
Which of the following represents an effect of stress on the immune system?
Which of the following represents an effect of stress on the immune system?
What is the defining characteristic of Acquired Immune Deficiency Syndrome (AIDS) according to CDC guidelines?
What is the defining characteristic of Acquired Immune Deficiency Syndrome (AIDS) according to CDC guidelines?
Which type of immunodeficiency is characterized by moderate to marked reduction in IgA, leading to infections in areas covered with mucosal secretions?
Which type of immunodeficiency is characterized by moderate to marked reduction in IgA, leading to infections in areas covered with mucosal secretions?
What gene defect is associated with Thymic hypoplasia (DiGeorge Syndrome), causing primary T-cell deficiency due to developmental malformation of thymus gland?
What gene defect is associated with Thymic hypoplasia (DiGeorge Syndrome), causing primary T-cell deficiency due to developmental malformation of thymus gland?
Which type of immunodeficiency is characterized by hypogammaglobulinemia due to blocked maturation of B-cells, resulting in recurrent ear, sinus, and respiratory infections?
Which type of immunodeficiency is characterized by hypogammaglobulinemia due to blocked maturation of B-cells, resulting in recurrent ear, sinus, and respiratory infections?
What type of immune abnormalities result in abnormal immunoglobulin synthesis or maturation deficiency of immunoglobulin?
What type of immune abnormalities result in abnormal immunoglobulin synthesis or maturation deficiency of immunoglobulin?
Which type of immunodeficiency is characterized by an inability to clear infections, leading to recurrent ear, sinus, and respiratory infections?
Which type of immunodeficiency is characterized by an inability to clear infections, leading to recurrent ear, sinus, and respiratory infections?
