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BIO250_Saylor_V5 | Unit 15: Diagnosing Infections
Started on Saturday, April 2, 2022, 1:51 PM
State Finished
Completed on Saturday, April 2, 2022, 2:12 PM
Time taken 21 mins 10 secs
Grade 85.50 out of 90.00 (95%)
Question 1 In order for B cells to produce antibodies and cytotoxic T cells to attack infected
Incorrect host cells, they must first
0.00 points out
of 4.50 Select one:
a. undergo maturation, encounter their specific antigen target, and then
become activated through cytokines.
b. encounter an antigen, develop specificity for that antigen, and then
remember the antigen.
c. be activated by interleukins, encounter an antigen, and then develop
specificity toward it.
d. recognize self markers, develop specificity for the markers, and then produce
clones.
Question 2
Acellular vaccines and subunit vaccines
Correct
4.50 points out Select one:
of 4.50 a. contain modified bacterial exotoxin molecules.
b. are always genetically engineered.
c. contain select antigenic components of a pathogen rather than whole cells
or viruses.
d. confer passive immunity.
e. utilize DNA strands that will produce the antigen.
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Question 3 The principal government agency responsible for tracking infectious diseases in
Correct the United States is the
4.50 points out
of 4.50 Select one:
a. Centers for Disease Control and Prevention.
b. World Health Organization.
c. National Institutes of Health.
d. United States Department of Agriculture.
e. Infection Control Committee.
Question 4 The region of each antibody molecule where amino acid composition is highly
Correct diversified from one clone of B lymphocytes to another is the ______ region.
4.50 points out
of 4.50 Select one:
a. variable
b. joining
c. constant
d. light
e. hinge
Question 5 The minimum sterilizing conditions in a steam autoclave are
Correct
4.50 points out Select one:
of 4.50 a. 121°C at 15 psi for 15 minutes.
b. 63°C for 30 minutes.
c. 160°C for 2 hours.
d. 71.6°C for 15 seconds.
e. 100°C for 30 minutes.
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