Chapter 35 Mastering Bio. Questions
Which of the following cells would release interferon?
A cell infected by a virus
Which of the following is a specific mechanism by which antibodies function in immunity?
All of the listed responses are correct
Major histocompatibility complex molecules __________.
All of the listed responses are correct.
Monoclonal antibodies differ from polyclonal antibodies in that they are __________.
All of the listed responses are correct.
Which of the following is not a disease caused by actions of the immune system?
All of the listed responses are correct.
Which of the following statements best describes an insect's immune system?
All of the listed responses are correct.
Lymphocytes are screened for self-reactivity in what part of the body?
Bone marrow and thymus
Someone infected by chicken pox once as a child is unlikely to suffer from this disease a second time. This is due to immunological memory, a reservoir of what type of cells generated following the initial exposure?
Both T cells and B cells
What proportion of immunized children experience side effects of the measles vaccine?
Fewer than one in a million
Which of the following is not a characteristic of innate immunity?
It is present only in vertebrates.
Which of the following defense mechanisms is incorrectly paired with one of its functions?
Lysozyme - attacks the cell wall of viruses
Which of the following conditions is not considered a disease or malfunction of the immune system?
MHC-induced transplant rejection
Which of the following cells does not play a role in immunity through phagocytosis of pathogens?
Natural killer cells
What role do major histocompatibility complex (MHC) molecules play in immunity?
Presentation of antigens to T cells
Why are the development and distribution of a new flu vaccine required every year?
The influenza virus undergoes frequent mutations and evolves rapidly.
What accounts for the huge diversity of antigens to which B cells can respond?
The recombination within light and heavy chain genes during development results in millions of possible antigen receptors.
Which of the following statements is not true of Toll-like receptors?
Toll-like receptors recognize molecules specific to individual pathogens.
Which of the following organisms would produce antibodies as part of an immune response?
Whale
Histamine is an important signaling molecule in the immune system that directly triggers __________.
blood vessels to dilate and become more permeable
Lysozyme plays a role in immunity through __________.
breaking down bacterial cell walls
Herpes simplex viruses can evade the immune system and persist in the body by __________.
infecting cells and then entering a largely inactive state
Anaphylactic shock is a life-threatening condition in which __________.
inflammatory chemicals released from immune cells lead to an inability to breathe and a lack of blood flow
Passive immunity differs from active immunity in that passive immunity __________.
is conferred by antibodies produced by another individual
A secondary immune response is more rapid and effective than a primary immune response because __________.
memory cells respond to the pathogen and rapidly proliferate into effector cells
Clonal selection is responsible for the __________.
proliferation of effector cells and memory cells specific to an encountered antigen
