MCB4403 Exam 4 Homework Questions And
Answers 100% Verified.
Which cell type is best associated with humoral immunity?
Choose one:
A. T cells
B. platelets
C. B cells
D. macrophages - Answers✔C
What does the term "immunogenicity" refer to?
Choose one:
A. the culmination of the various signs and symptoms of disease
B. the effectiveness with which an antigen elicits an immune response
C. the time required for one human to transmit disease to another
D. the rate at which invading bacterial cells divide and cause disease - Answers✔B
The immune response to smallpox will not protect someone against the plague bacillus (Yersinia
pestis). Which of the following best describes this idea?
Choose one:
A. B-cell tolerance
B. major histocompatibility complex
C. threshold dose
D. immunological specificity - Answers✔D
In a process called __________, an invading antigen binds to a B cell and that B cell then
proliferates to large numbers and differentiates into antibody-producing plasma cells or memory
B cells.
Choose one:
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A. denaturation
B. opsonization
C. antigen presentation
D. clonal selection - Answers✔D
Which of the following describes why the secondary immune response is much quicker and
greater than the primary response to the same antigen?Choose one:
A. During the primary immune response, the antigen is quickly covered by antibody, slowing the
response.
B. Memory B cells are in place when the same antigen is encountered again.
C. Naive B cells are in excess and poised for a quick, strong secondary response.
D. T cells are involved in the secondary immune response but not during the primary response. -
Answers✔B
A child was exposed to a disease-causing virus (most likely chicken pox from the Varicella
zoster virus) when he was 5 years old. At 12 years old, the child encounters the same virus again.
What is most likely expected to happen?
Choose one:
A. The pathogen will be neutralized with antibody quickly and the virus will be cleared before
symptoms develop.
B. The child will be administered antibiotics immediately to remove the disease-causing
pathogen.
C. Since macrophages already acted against the pathogen, they will engulf the virus immediately
upon exposure.
D. After a short lag phase, the child will mount an immune response and serum antibody
concentration will increase. - Answers✔A
Which of the following is not among the common types of vaccines?
Choose one:
A. microbial cell surface proteins
B. attenuated-strain microbes
C. microbial cell nucleic acids
D. heat-killed intact microbes - Answers✔C
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Herd immunity is in place when _____________ of the individuals within a population are
vaccinated. - Answers✔most
Herd immunity protection __________ as more individuals are vaccinated.
Choose one:
A. decreases
B. remains the same
C. increases - Answers✔C
Which of the following statements about herd immunity is correct?
Choose one:
A. Herd immunity will not protect against an unvaccinated person acquiring a deadly disease
from a sick person.
B. Herd immunity will provide protection against tetanus provided many people have the DTaP
vaccine.
C. Relying only on herd immunity as protection is a good way to ensure that you will not
become ill.
D. Herd immunity is only effective against viral diseases as bacterial transmission is exempt. -
Answers✔A
Which of the following is correct regarding vaccines and human health? Please restrict your
answers to address only biological facts.
Choose one:
A. Serious health side effects from immunizations, like diabetes, are common.
B. Vaccines have been scientifically linked to autism.
C. Vaccines may initially elicit a fever and mild infection.
D. The risks associated with vaccination far outweigh the benefits. - Answers✔C
Which of these types of immunity includes the other two types?
Choose one:
A. adaptive immunity
B. cell-mediated immunity
C. humoral immunity
D. None of these types of immunity is related to another type. - Answers✔A
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