ATI RN
Lymphatic and Immune System Test Questions Questions
Question 1 of 5
In spite of their low affinity for binding to their antigen, IgM antibodies can be quite effective at promoting the elimination of extracellular bacterial infections. This is due to:
Correct Answer: B
Rationale: IgM pentamers bind multivalently , enhancing efficacy; not epithelial , concentration , or timing alone.
Question 2 of 5
Which of the following cell types is responsible for the cell-mediated immune response?
Correct Answer: A
Rationale: T cells drive cell-mediated immunity, targeting infected or cancerous cells, unlike B cells (humoral), leukocytes (general), or NK cells (innate).
Question 3 of 5
Which of the following diseases is thought to be an autoimmune disease?
Correct Answer: B
Rationale: Insulin-dependent diabetes (Type 1) is autoimmune, attacking pancreatic cells, unlike cancer, viral infections (measles/mumps), or ulcers.
Question 4 of 5
The definition, 'Innate and adaptive immune cell secreted protein that act as signalling molecules in an immune response' corresponds to?
Correct Answer: B
Rationale: Cytokines are signaling proteins secreted by immune cells, unlike surfactants, AMPs (kill pathogens), or lysozymes (enzymes).
Question 5 of 5
How does the concept of affinity differ from avidity?
Correct Answer: A
Rationale: Affinity is single-site binding strength; avidity is the cumulative strength of multiple sites.