BIO 212 - Homework Module 7 Exam Questions and Answers Already Passed Latest Update
2025-2026
Which of the following statements is false regarding the efforts made by the U.S. government to
prepare for a potential bioterrorism attack? - Answers FBI screening of all laboratory workers
who have access to potential agents of bioterrorism
During 2007, there were 3.6 new cases of pertussis per 100,000 susceptible individuals in the
United States, part of a steady increase that has been occurring since the 1980s.
(https://www.cdc.gov/pertussis/clinical/index.html). This statistic illustrates the term ______. -
Answers Incidence
Measles reached an all time low in the United States when the CDC declared it eliminated in
2000. In 2014, 667 cases were reported and cases continue to occur in clusters throughout the
country. Which of the following provides the most plausible explanation for this reemergence? -
Answers Parents, worried that vaccines may cause harm to their child, decide not to vaccinate,
effectively reducing the herd immunity for any given disease.
This type of pathogen cannot grow outside a host cell. - Answers Obligate intracellular pathogen
Drag the statements to the term they describe in order to review characteristics of virulence
factors. - Answers Coagulase: causes red blood cells to clot
Collagenase: breaks down framework proteins in skin and connective tissue
Elastase: degrades laminin in basement membranes
Hemolysins: kill red blood cells
Hyaluronidase: breaks down extracellular matrix holding tissues together
Phospholipase: degrades components of the plasma membrane
Leukocidins: kill white blood cells
Pyrogenic toxin B: protease from group A streptococci
Streptokinase: leads to degradation of fibrin clots
There are many things that people can do to help prevent the spread of infectious disease.
Match each term with the action that it represents. - Answers Chemotherapy- use of antibiotics
for a bacterial infection
Sanitation- routine treatment of drinking water
Disinfection- periodic use of bleach on a kitchen countertop
Drag the labels to their corresponding mechanism of transmission. - Answers Airborne
, transmission: coughing, sneezing, droplet nuclei, dust
Contact transmission: kissing, sex, touching
Vehicle transmission: surgical instruments, fomites, shared cups
Vector-borne transmission: anthropods, animals, fleas, mosquitoes, ticks
Which of the following organisms contain a pathogenicity island that encodes for Type III
secretion proteins? - Answers - Salmonella enterica
- Shigella flexneri
Healthcare-associated infections are of huge concern to healthcare personnel, causing 88,000
deaths annually. What measures would be recommended for prevention and control of
healthcare-associated infections? (Check all that apply.) - Answers - Routine hand washing
- Wearing gloves when contacting bodily fluids like blood or saliva
- Use of aseptic technique by hospital personnel
There are many agencies that play a role in the tracking and control of disease. Match each
agency with a specific characteristic or role that they play. - Answers U.S. Public Health Service-
Overseen by a central administrator, the Surgeon General
Department of Health and Human Services- Oversees all health/education/welfare agencies
created by Congress
Centers for Disease Control and Prevention (CDC)- Develops and implements disease
prevention and control in the United States
World Health Organization- Provides global disease surveillance
Why do most microorganisms not cause disease upon entry of a human host? - Answers All of
the choices are correct.
What has been the greatest change on public health over the past century as a result of public
health surveillance? - Answers Infectious diseases, previously the leading cause of death,
diminished dramatically due to improvements in sanitation and antimicrobial drugs and vaccine
implementation.
One strategy for exploiting host cells that is used by certain bacteria such as Listeria, Shigella,
2025-2026
Which of the following statements is false regarding the efforts made by the U.S. government to
prepare for a potential bioterrorism attack? - Answers FBI screening of all laboratory workers
who have access to potential agents of bioterrorism
During 2007, there were 3.6 new cases of pertussis per 100,000 susceptible individuals in the
United States, part of a steady increase that has been occurring since the 1980s.
(https://www.cdc.gov/pertussis/clinical/index.html). This statistic illustrates the term ______. -
Answers Incidence
Measles reached an all time low in the United States when the CDC declared it eliminated in
2000. In 2014, 667 cases were reported and cases continue to occur in clusters throughout the
country. Which of the following provides the most plausible explanation for this reemergence? -
Answers Parents, worried that vaccines may cause harm to their child, decide not to vaccinate,
effectively reducing the herd immunity for any given disease.
This type of pathogen cannot grow outside a host cell. - Answers Obligate intracellular pathogen
Drag the statements to the term they describe in order to review characteristics of virulence
factors. - Answers Coagulase: causes red blood cells to clot
Collagenase: breaks down framework proteins in skin and connective tissue
Elastase: degrades laminin in basement membranes
Hemolysins: kill red blood cells
Hyaluronidase: breaks down extracellular matrix holding tissues together
Phospholipase: degrades components of the plasma membrane
Leukocidins: kill white blood cells
Pyrogenic toxin B: protease from group A streptococci
Streptokinase: leads to degradation of fibrin clots
There are many things that people can do to help prevent the spread of infectious disease.
Match each term with the action that it represents. - Answers Chemotherapy- use of antibiotics
for a bacterial infection
Sanitation- routine treatment of drinking water
Disinfection- periodic use of bleach on a kitchen countertop
Drag the labels to their corresponding mechanism of transmission. - Answers Airborne
, transmission: coughing, sneezing, droplet nuclei, dust
Contact transmission: kissing, sex, touching
Vehicle transmission: surgical instruments, fomites, shared cups
Vector-borne transmission: anthropods, animals, fleas, mosquitoes, ticks
Which of the following organisms contain a pathogenicity island that encodes for Type III
secretion proteins? - Answers - Salmonella enterica
- Shigella flexneri
Healthcare-associated infections are of huge concern to healthcare personnel, causing 88,000
deaths annually. What measures would be recommended for prevention and control of
healthcare-associated infections? (Check all that apply.) - Answers - Routine hand washing
- Wearing gloves when contacting bodily fluids like blood or saliva
- Use of aseptic technique by hospital personnel
There are many agencies that play a role in the tracking and control of disease. Match each
agency with a specific characteristic or role that they play. - Answers U.S. Public Health Service-
Overseen by a central administrator, the Surgeon General
Department of Health and Human Services- Oversees all health/education/welfare agencies
created by Congress
Centers for Disease Control and Prevention (CDC)- Develops and implements disease
prevention and control in the United States
World Health Organization- Provides global disease surveillance
Why do most microorganisms not cause disease upon entry of a human host? - Answers All of
the choices are correct.
What has been the greatest change on public health over the past century as a result of public
health surveillance? - Answers Infectious diseases, previously the leading cause of death,
diminished dramatically due to improvements in sanitation and antimicrobial drugs and vaccine
implementation.
One strategy for exploiting host cells that is used by certain bacteria such as Listeria, Shigella,
