What makes agglutination by antibodies possible? Each antibody has at least two antigen-binding sites.
What is the role of plasma cells in humoral immunity? Plasma cells produce antibodies.
Which of the following most accurately describes how a pathogenic bacterium might be affected by antibodies...
MCB 100 Exam 3 Questions and
Solutions
What makes agglutination by antibodies possible? ✅Each antibody has at least two
antigen-binding sites.
What is the role of plasma cells in humoral immunity? ✅Plasma cells produce
antibodies.
Which of the following most accurately describes how a pathogenic bacterium might be
affected by antibodies? ✅The antibodies may block proteins necessary for binding the
pathogen to the host, may opsonize the bacterium, or may agglutinate bacteria.
Mucous membranes are a part of ✅innate defense
According to the animation, B cells interact directly with ✅helper T cells
Which of the following defense systems would be involved in eliminating virally-infected
cells? ✅T lymphocytes
According to the animation, antibodies directly interact with which innate defenses?
✅Phagocytosis and the complement system
Which cells directly attack abnormal cells in the body? ✅Cytotoxic T cells
The primary immune response involves ✅a slow rise in the concentration of
antibodies, followed by a gradual decline.
According to the animation, for approximately how many days is IgG present in the
serum? ✅ten days
According to the animation, on what day does IgM first appear? ✅Day 5
Which antibody type is largest? ✅IgM
Immunoglobulin M (IgM) can be a pentamer held together with a J chain; that is, it is
more than five times the size of the most common antibody.
A pregnant woman asks you how her unborn child can guard against "germs." You
explain that she is making antibodies that cross the placenta to provide protection. What
type of antibodies do this? ✅IgG
IgG crosses the placenta to provide some protection for the fetus
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