Epidemics: the dynamics of infectious diseases Course Week 2 Answers. (100% Correct)

Week 2 Quiz

1) The innate immune response controls an infection by:

a) Inducing cell death

b) All of the given answers

c) Phagocytosis

d) Increasing mucus production

2) Which of the following is consistent with what we know about cells of the adaptive immune system?

a) T cells originate from the thymus and engulf pathogens circulating in the blood.

b) B cells originate in the bone marrow and kill infected cells by direct contact.

c) B cells originate in the bone marrow and produce proteins that interfere with pathogen replication.

d) T cells originate in the bone marrow and produce proteins that interfere with pathogen replication.

3) Which features differentiate the adaptive and innate immune system?

a) The innate system has molecular products for pathogen control and adaptive system has only cells.

b) Only the innate system responds to a specific pathogen antigen.

c) The adaptive immune system has a "memory" of a previous encounter with a pathogen.

d) Only the adaptive immune system is responsible for killing pathogens.

4) Which of the following is true?

a) All of the answers above are true.

b) The microbiome is estimated to contain at least 100 times more genes than wer own genome.

c) There are fewer microbial cells than human cells in wer body.

d) The microbiome is estimated to weigh about 10 pounds.

5) Which of the following is true?

a) A mutation in one gene copy of the hemoglobin coding gene is sufficient to cause sickle cell anemia.

b) Sickle cell anemia confers almost 100% resistance to malaria.

c) Sickle cell anemia is an infectious disease of the lung.

d) None of the answers provided.

Epidemics: the dynamics of infectious diseases Course Week 1 Answers. (100% Correct)

6) The mechanism by which negative social experiences influence immunity is:

a) Stress

b) Providing access to more resources

c) Promoting health behaviors (example: hand washing)

d) Emotional support

7) Providing someone a car ride to get to a clinic to see health professionals is an example of:

a) Authority heuristic

b) Emotional support

c) Instrumental support

d) Ostracism

8) Which of the following is not part of the basic inflammatory response?

a) Pain due to stimulation of nerve endings

b) Redness due to increase in blood flow

c) Swelling due to vascular leakage

d) Redness due to hemorrhage

9) Which of the following is true?

a) A single flu genome contains a repertoire of genes encoding for different variants of a particular antigen.

b) A single trypanosome genome contains a repertoire of genes encoding for different variants of a particular antigen, and this explains why trypanosome infections can last for months.

c) Antigenic drift and antigenic shift is the same thing.

d) Antigenic shift explains why untreated infections with malaria parasites can last for months.

10) Koch's postulates require that:

a) A microorganism that is isolated from a sick individual can be identified to the 

species level.

b) A microorganism that is isolated from a sick individual will be able to grow in

culture.

c) A sick individual can infect a healthy individual.

d) A microorganism that is isolated from a sick individual can cause the same disease in a healthy individual.

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Epidemics: the dynamics of infectious diseases Course Week 1 Answers. (100% Correct)

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Epidemics: the dynamics of infectious disease week 3 Answers (100% Correct)