S
sunshine daisy
Guest
1.Which of these is not part of insect immunity?
enzyme activation of microbe-killing chemicals
activation of natural killer cells
phagocytosis by hemocytes
production of antimicrobial peptides
a protective exoskeleton
2. Which of the following results in long-term immunity?
the passage of maternal antibodies to a developing fetus
the inflammatory response to a splinter
the injection of serum from people immune to rabies
the administration of the chicken pox vaccine
the passage of maternal antibodies to a nursing infant
3.
What is a characteristic of early stages of local inflammation?
anaphylactic shock
fever
attack by cytotoxic T cells
release of histamine
antibody- and complement-mediated lysis of microbes
4. Which of the following is not true about helper T cells?
They function in cell-mediated and humoral responses.
They are activated by polysaccharide fragments.
They bear surface CD4 molecules.
They are subject to infection by HIV.
When activated, they secrete cytokines.
5. HIV targets include all of the following except ____________________.
macrophages.
cytotoxic T cells.
helper T cells.
cells bearing CD4.
brain cells.
6.Which statement best describes the difference in responses of effector B cells (plasma cells) and cytotoxic T cells?
B cells confer active immunity; cytotoxic T cells confer passive immunity.
B cells kill viruses directly; cytotoxic T cells kill virus infected cells.
B cells secrete antibodies against a virus; cytotoxic T cells kill virus-infected cells.
B cells accomplish the cell-mediated response; cytotoxic T cells accomplish the humoral response.
B cells respond the first time the invader is present; cytotoxic T cells respond subsequent times.
7.An epitope associates with which part of an antibody?
the antibody-binding site
the heavy-chain constant regions only
variable regions of a heavy chain and light chain combined
the light-chain constant regions only
the antibody tail
enzyme activation of microbe-killing chemicals
activation of natural killer cells
phagocytosis by hemocytes
production of antimicrobial peptides
a protective exoskeleton
2. Which of the following results in long-term immunity?
the passage of maternal antibodies to a developing fetus
the inflammatory response to a splinter
the injection of serum from people immune to rabies
the administration of the chicken pox vaccine
the passage of maternal antibodies to a nursing infant
3.
What is a characteristic of early stages of local inflammation?
anaphylactic shock
fever
attack by cytotoxic T cells
release of histamine
antibody- and complement-mediated lysis of microbes
4. Which of the following is not true about helper T cells?
They function in cell-mediated and humoral responses.
They are activated by polysaccharide fragments.
They bear surface CD4 molecules.
They are subject to infection by HIV.
When activated, they secrete cytokines.
5. HIV targets include all of the following except ____________________.
macrophages.
cytotoxic T cells.
helper T cells.
cells bearing CD4.
brain cells.
6.Which statement best describes the difference in responses of effector B cells (plasma cells) and cytotoxic T cells?
B cells confer active immunity; cytotoxic T cells confer passive immunity.
B cells kill viruses directly; cytotoxic T cells kill virus infected cells.
B cells secrete antibodies against a virus; cytotoxic T cells kill virus-infected cells.
B cells accomplish the cell-mediated response; cytotoxic T cells accomplish the humoral response.
B cells respond the first time the invader is present; cytotoxic T cells respond subsequent times.
7.An epitope associates with which part of an antibody?
the antibody-binding site
the heavy-chain constant regions only
variable regions of a heavy chain and light chain combined
the light-chain constant regions only
the antibody tail