35. Which of the following best describes IgM antibodies? A) They are the antibo
ID: 266835 • Letter: 3
Question
35. Which of the following best describes IgM antibodies? A) They are the antibody dass found in body secretions B) They cause basophils and eosinophils to degranulate C They can aross the placenta to provide passive immunity D) They immune response D They interact with phagocytes and NKcells are the most common type of antibody in the blood during the primary phase of the 36. Which of the following choices does NOT describe the body's first line of defense: A) flushing action of urine B) the presence of lysosomes in tears that destroys bacteria C phagocytic white blood cells D) the sebum secreted by sebaceous glands that lowers skin pH. D The continual shedding of cells carries away microorganisms 37. What is a large foreign subst ance which, when introduced into the body, stimulates an immune reaction? A) antibody B) gammaglobulin C hapten D) antigen E immunoglobulin 38. During the flu season, people are encouraged to get vaccinated against the influenza virus. Upon reoeiving the vacaine, this will provide you with which type of immunity against the flu? A) natural active immunity B) artificial active immunity C natural passive immunity D) artificial passive immunity E active passive immunityExplanation / Answer
35. They are the most common type of antibody in the blood during the primary phase of immune response.
IgM are pentameric. They can effectively fight against bacteria compared to other antibody class. IgG is produced later.
36. E. The continual shedding of cells carried away microorganisms.
Normal skin flora actually act as defence against infections.
37. D. Antigen.
Antigen elicits immune response and reacts with the product of immune response. Hapten is incomplete antigen.it cannot elicit immune response by itself.
38. B. Artificial active immunity.
Vaccines are artificial preparation. When introduced into body the body actively secretes immunoglobulins which protects us against infections.
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