Open Question
Define antibody. Using an appropriately labeled diagram, describe the structure of an antibody monomer. Indicate and label variable and constant regions, heavy and light chains.
21. The Immune System
Clonal Selection
Back21. The Immune System
Clonal Selection
- Open Question
Match the following antibodies with the correct definition.
____IgD
____IgM
____IgG
____IgA
____IgE
a. Antibody found in secretions
b. Most common antibody; crosses the placenta
c. Antibody involved in allergies and parasitic infections
d. Pentamer and potent agglutinating agent
e. Antibody bound to the B cell plasma membrane
- Multiple Choice
Which of the following statements is FALSE?
- Open Question
Mark the following statements as true or false. If a statement is false, correct is to make a true statement.
d. Vaccinations are given to induce the production of the inflammatory response.
- Open QuestionName the five classes of immunoglobulins. Which is most likely to be found attached to a B cell membrane? Which is most abundant in plasma? Which is important in allergic responses? Which is the first Ig to be released during the primary response? Which can cross the placental barrier?
- Open QuestionHow does the formation of an antigen–antibody complex cause the elimination of an antigen?
- Open QuestionName the five antibody classes and describe where each is most likely to be found in the body.
- Open QuestionDifferentiate between a primary and a secondary immune response. Which is more rapid and why?
- Open QuestionAntibodies released by plasma cells are involved ina. humoral immunity,b. immediate hypersensitivity reactions,c. autoimmune disorders,d. all of the above.
- Open QuestionAn investigator at a crime scene discovers some body fluid on the victim's clothing. The investigator carefully takes a sample and sends it to the crime lab for analysis. On the basis of the analysis of antibodies, could the crime lab determine whether the sample is blood plasma or semen? Explain.
- Multiple ChoiceWhich immune cell is able to respond quickly after any subsequent encounter with the same antigen?
- Open QuestionHow do antibodies help defend the body?
- Open QuestionAn anesthesia technician is advised that she should be vaccinated against hepatitis B, which is caused by a virus. She is given one injection and is told to come back for a second injection in a month and a third injection after 6 months. Why is this series of injections necessary?
- Open Question
Which of the following is not a role of TH cells?
a. Stimulation of macrophages
b. Activation of naïve TC cells
c. Stimulation of naïve B cells
d. Stimulation of clonal selection
- Open Question
Explain how active immunity and passive immunity differ.