Ch5 Adaptive Quiz2: IgG and molecular motors Flashcards
What characterizes polyclonal antibodies?
Polyclonal antibodies recognize different epitopes on the same antigen.
Aggregated myosin molecules are called:
thick filaments
Where in the body are lymphocytes and macrophages produced?
in the bone marrow
What does the term power stroke mean?
Myosin returns to its original resting state, and actin pulls the myosin tail towards the Z disk.
Which statement is TRUE about antibody‑antigen binding?
The binding involves many noncovalent weak interactions between the antigen and antibody, so the Kd for this process is very low.
Which molecule does NOT participate in thin filament formation?
Myosin
How do actin and myosin interact with each other?
Each actin monomer in the thin filament binds one myosin head group with high affinity.
Which proteins are antibodies produced by B lymphocytes that bind bacteria, viruses, and large molecules identified as foreign?
immunoglobulins
What does actin look like in muscle cells?
a long polymer filament consisting of monomers bound to ADP
Which cells DO participate in immunity?
Leukocytes, lymphocytes, and macrophages
Which immunoglobulins contains a J chain in its structure?
IgA and IgM
Which immune component binds bacteria, viruses, or large molecules identified as foreign and targets them for destruction?
immunoglobulins
IgG can bind to viruses that invade an organism. What happens next?
The Fc region of IgG binds to a macrophage, which destroys the virus.
Which class of immunoglobulins is the first to be made by B lymphocytes and the major antibody to be produced in the early stages of a primary immune response?
IgM
