Which of the following statements is true? In the secondary response to an antigen, lower levels of IgM will be detected in an individual's serum. The lag period following secondary exposure to an antigen is longer than the lag period following primary exposure. In the secondary response to an antigen, higher levels of IgM will be detected in an individual's serum. The lag period following secondary exposure to an antigen is shorter than the lag period following primary exposure. An immunocompromised person usually relies on _______ to not become infected by a pathogen because ______. herd immunity; there are too few people in the population susceptible to the pathogen for the disease to spread vaccination; this is the only way the immunocompromised individual can produce antibodies variolation; a small amount of infectious virus will still be eliminated by cytotoxic T cells Which of the following is NOT a class of vaccine? live pathogenic cells inactivated virus pathogen mRNA toxoid
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In the secondary response to an antigen, lower levels of IgM will be detected in an individual’s serum. This statement is true because the secondary response mainly involves the production of higher levels of IgG, not IgM. Show more…
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When comparing the primary and secondary immune responses, which of the following statements is true? IgM concentration levels are higher than IgG concentration levels by the end of the primary immune response. IgM concentration levels are higher than IgG concentration levels during the secondary immune response. IgG concentration levels are much higher during the secondary immune response.
Madhur L.
For each of the following statements, indicate whether the statement is true or false. If you think the statement is false, explain why. a. Booster shots are required because repeated exposure to an antigen builds a stronger immune response. b. The gene for the T-cell receptor must be cut and spliced together before it can be expressed. c. Our bodies face the greatest onslaught from foreign invaders through our skin. d. Increased production of antibody in the immune system is driven by the presence of antigen. e. Innate immunity is deployed only during the primary response, and adaptive immunity begins during a secondary response. f. Autoimmunity and immunodeficiency are two different terms for the same set of general disorders. g. If you receive intravenous immunoglobulin to treat a snakebite, you will be protected from the venom of this snake in the future, but not venom from other types of snakes. h. Innate and adaptive immunity work collaboratively to mount an immune response against pathogens. i. The genomic sequences in our circulating T cells for encoding a T-cell receptor are the same as those our parents carry in their T cells. j. Both the innate and adaptive arms of the immune response will be capable of responding more efficiently during a secondary response. k. Memory cells save portions of the pathogen they encounter for later use during a secondary response
Suman K.
35. Which of the following best describes IgM antibodies? A) They are the antibody class found in body secretions. B) They cause basophils and eosinophils to degranulate. C) They can cross the placenta to provide passive immunity. D) They are the most common type of antibody in the blood during the primary phase of the immune response. E) They interact with phagocytes and NK cells. 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. E) The continual shedding of cells carries away microorganisms. 37. What is a large foreign substance 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 receiving the vaccine, 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 immunity.
Sri K.
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