Time Remaining: 1. Prions are infectious proteins that cause normal proteins in

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Time Remaining:
1. Prions are infectious proteins that cause normal proteins in the brain to misfold. (Points: 1)
True
False


2. In order to reduce the number of cases of bovine spongiform encephalopathy, many countries around the world are using improved detection methods as well as banning the incorporation of animal tissues in animal feed. (Points: 1)
True
False


3. The bubonic plague epidemic that swept through Europe between 148 to 1350 AD was induced by (Points: 1)
a virus.
a prion.
a protozoan.
a bacterium.
an unidentified eukaryotic organism.


4. When comparing viruses and bacteria, which of the following is correct? (Points: 1)
Viruses are larger than bacteria.
Viruses are pathogens; bacteria are decomposers.
Viruses have membrane-bound organelles; bacteria do not have membrane-bound organelles.
Viruses and bacteria reproduce on their own.
Viruses and bacteria contain genetic material.


5. Prions: (Points: 1)
are proteins that are capable of replicating themselves.
are believed to be the pathogen that causes variant Creutzfeldt-Jakob disease.
are normal brain proteins that have an incorrect shape.
are resistant to high temperatures and drying.
all of the above


6. Which of the following sexually transmitted diseases is characterized by three distinct phases of infection? (Points: 1)
chlamydia
genital warts
hepatitis B
syphilis
gonorrhea


7. Which of the following is not true regarding syphilis? (Points: 1)
Symptoms of the tertiary phase include damage to the cardiovascular and nervous systems.
T. pallidum, which causes syphilis, can cross the placenta and cause the death of the unborn child.
The symptoms of syphilis can be treated, but there is no cure for this disease.
The primary phase of syphilis is characterized by the presence of chancres at the infection site.
In some infected individuals, the infection may cease after stage two and not progress into stage three.


8. The human papillomavirus (HPV) causes: (Points: 1)
gonorrhea
vaginal yeast infections.
genital herpes.
syphilis
genital warts.


9. Early campaigns of the 19th century that focused on sanitation, hygiene, housing, and nutrition had little effect in controlling communicable disease due to flawed rationale based on theories of miasma or contagion. (Points: 1)
True
False


10. The EnvID framework proposed by Eisenberg encompasses three interlocking components: environment, transmission, and disease. (Points: 1)
True
False


11. Microbes in the small intestine and in the large intestine are required to complete the digestion process. (Points: 1)
True
False


12. Selection criteria for a probiotic lactic acid bacteria includes all but which of the following? (Points: 1)
Exerts a beneficial effect on the host
Good shelf life
Antimicrobial properties towards pathogens
Significant research to back up the claims


13. Climate change is not considered a factor which contributes to emerging infectious disease. (Points: 1)
True
False


14. The CDC has the primary authority during an outbreak, and will routinely provide aid during an outbreak. (Points: 1)
True
False


15. Cyanide is the most acutely toxic substance known. (Points: 1)
True
False

Explanation / Answer

1.Prions are infectious proteins that cause normal proteins in the brain to misfold.-TRUE 2.In order to reduce the number of cases of bovine spongiform encephalopathy, many countries around the world are using improved detection methods as well as banning the incorporation of animal tissues in animal feed.-TRUE 3.The bubonic plague epidemic that swept through Europe between 148 to 1350 AD was induced by --A Bacterium 4.When comparing viruses and bacteria, which of the following is correct--Viruses and bacteria contain genetic material.
5.Prions:are believed to be the pathogen that causes variant Creutzfeldt-Jakob disease
6.Which of the following sexually transmitted diseases is characterized by three distinct phases of infection-- Syphilis
7. Which of the following is not true regarding syphilis--The symptoms of syphilis can be treated, but there is no cure for this disease. 8.The human papillomavirus (HPV) causes--genital warts. 9. Early campaigns of the 19th century that focused on sanitation, hygiene, housing, and nutrition had little effect in controlling communicable disease due to flawed rationale based on theories of miasma or contagion.--FALSE 10. The EnvID framework proposed by Eisenberg encompasses three interlocking components: environment, transmission, and disease--TRUE 11. Microbes in the small intestine and in the large intestine are required to complete the digestion process-TRUE 12. Selection criteria for a probiotic lactic acid bacteria includes all but which of the following--Significant research to back up the claims 13. Climate change is not considered a factor which contributes to emerging infectious disease--FALSE 14. The CDC has the primary authority during an outbreak, and will routinely provide aid during an outbreak--TRUE 15. Cyanide is the most acutely toxic substance known--FALSE

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