MASTERING MICROBIOLOGY CHAPTER 17 HW ACTUAL QUIZ
QUESTIONS & VERIFIED ANSWERS | LATEST UPDATE
Which cells directly attack abnormal cells in the body? - CORRECT ANSWERS-Cytotoxic T cells
What is the role of helper T cells in the adaptive immune response? - CORRECT ANSWERS-
Helper T cells activate B cells and cytotoxic T lymphocytes to kill infected host cells.
What is meant by the clonal expansion of a B cell? - CORRECT ANSWERS-An activated B cell
divides into cells that give rise to memory B cells and plasma cells.
The student who caught the cold caused by this specific Rhinovirus was exposed to the exact same
Rhinovirus 18 months later. What component of the immune system will protect her from getting the
same cold again? - CORRECT ANSWERS-Memory B cells
Correctly order the steps involved cellular immunity:
1.) The Tc recognizes the infected host cell
2.) The Tc interacts with epitope presented by MHC-I on the dendritic cell
3.) The Tc secretes perforin and granzyme, causing apoptosis
4.) The helper T cell activates the Tc cell - CORRECT ANSWERS-2,4,1,3
Which of the following is NOT a step used by cytotoxic T cells to kill infected host cells? - CORRECT
ANSWERS-Recognition of infected host cell using its CD4 glycoprotein
Place the following steps of phagocytosis in the order that they occur:
1) Endosome fuses with lysozome
2) Dendritic cell engulfs Rhinovirus
3) Epitopes are attached to MHC-II
4) Digestion of the Rhinovirus
5) MHC-II plus the attached epitope move to the outside of the dendritic cell - CORRECT
ANSWERS-2,1,4,3,5
, Which pair of molecules do NOT directly interact with one another? - CORRECT ANSWERS-BCR
and TCR
Which of the following is NOT a step that ultimately leads to antibody production? - CORRECT
ANSWERS-Activation of cytotoxic T cells by helper T cells
Mucous membranes are a part of? - CORRECT ANSWERS-innate defense.
According to the animation, B cells interact directly with? - CORRECT ANSWERS-helper T cells.
Which of the following defense systems would be involved in eliminating virally-infected cells? -
CORRECT ANSWERS-T lymphocytes
According to the animation, antibodies directly interact with which innate defenses? - CORRECT
ANSWERS-Phagocytosis and the complement system
A person who has AIDS contracts rare and often life-threatening infections because their helper T cell
count is so low. Which of the following components of the immune response still respond to antigen
despite the low helper T cell count? - CORRECT ANSWERS-Clonal selection of B cells
Which of the following statements is true? - CORRECT ANSWERS-Adaptive defenses include both
humoral and cellular immunity.
Antigen processing and presentation - CORRECT ANSWERS-is a way for a cell to give information
about its activities.
Why would a body cell that is not a phagocyte need to present antigens? - CORRECT ANSWERS-
Non-phagocytic body cells can become infected with a virus.
How do phagocytes communicate to other cells what they have captured? - CORRECT
ANSWERS-They present antigens from engulfed foreign cells.
QUESTIONS & VERIFIED ANSWERS | LATEST UPDATE
Which cells directly attack abnormal cells in the body? - CORRECT ANSWERS-Cytotoxic T cells
What is the role of helper T cells in the adaptive immune response? - CORRECT ANSWERS-
Helper T cells activate B cells and cytotoxic T lymphocytes to kill infected host cells.
What is meant by the clonal expansion of a B cell? - CORRECT ANSWERS-An activated B cell
divides into cells that give rise to memory B cells and plasma cells.
The student who caught the cold caused by this specific Rhinovirus was exposed to the exact same
Rhinovirus 18 months later. What component of the immune system will protect her from getting the
same cold again? - CORRECT ANSWERS-Memory B cells
Correctly order the steps involved cellular immunity:
1.) The Tc recognizes the infected host cell
2.) The Tc interacts with epitope presented by MHC-I on the dendritic cell
3.) The Tc secretes perforin and granzyme, causing apoptosis
4.) The helper T cell activates the Tc cell - CORRECT ANSWERS-2,4,1,3
Which of the following is NOT a step used by cytotoxic T cells to kill infected host cells? - CORRECT
ANSWERS-Recognition of infected host cell using its CD4 glycoprotein
Place the following steps of phagocytosis in the order that they occur:
1) Endosome fuses with lysozome
2) Dendritic cell engulfs Rhinovirus
3) Epitopes are attached to MHC-II
4) Digestion of the Rhinovirus
5) MHC-II plus the attached epitope move to the outside of the dendritic cell - CORRECT
ANSWERS-2,1,4,3,5
, Which pair of molecules do NOT directly interact with one another? - CORRECT ANSWERS-BCR
and TCR
Which of the following is NOT a step that ultimately leads to antibody production? - CORRECT
ANSWERS-Activation of cytotoxic T cells by helper T cells
Mucous membranes are a part of? - CORRECT ANSWERS-innate defense.
According to the animation, B cells interact directly with? - CORRECT ANSWERS-helper T cells.
Which of the following defense systems would be involved in eliminating virally-infected cells? -
CORRECT ANSWERS-T lymphocytes
According to the animation, antibodies directly interact with which innate defenses? - CORRECT
ANSWERS-Phagocytosis and the complement system
A person who has AIDS contracts rare and often life-threatening infections because their helper T cell
count is so low. Which of the following components of the immune response still respond to antigen
despite the low helper T cell count? - CORRECT ANSWERS-Clonal selection of B cells
Which of the following statements is true? - CORRECT ANSWERS-Adaptive defenses include both
humoral and cellular immunity.
Antigen processing and presentation - CORRECT ANSWERS-is a way for a cell to give information
about its activities.
Why would a body cell that is not a phagocyte need to present antigens? - CORRECT ANSWERS-
Non-phagocytic body cells can become infected with a virus.
How do phagocytes communicate to other cells what they have captured? - CORRECT
ANSWERS-They present antigens from engulfed foreign cells.
