VTPB 221 Final Review Questions And Answers With Latest Updates
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VTPB 221
VTPB 221 Final Review Questions And Answers With Latest Updates
Using night soil and manure as a source of nitrogen during the development of agriculture increased the number of human diseases by increasing the parasites, bacteria, and flies humans were exposed to. (True or False?) ANS True
So...
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using night soil and manure as a source of nitroge
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VTPB 221 Final Review Questions And Answers With
Latest Updates
Using night soil and manure as a source of nitrogen during the development of agriculture increased
the number of human diseases by increasing the parasites, bacteria, and flies humans were exposed
to. (True or False?) ANS True
Some of the consequences of the development of agriculture during early human societies on human
health were: ANS Appearance of zoonotic diseases
Poisonous air exhaled by decaying organic matter caused disease: ANS Miasma Theory
The "Germ Theory" started with Pasteur providing that germs are present in the air and cause
disease. (True or False?) ANS True
Hippocrates believed that disease is not caused by superstitions and gods but by an imbalance among
four vital "humors" within us. (True or False?) ANS True
The relative size of pathogens from smallest to largest: ANS Viruses < Bacteria < Protozoa <
Helminths
In order to replicate and generate new virus particles, viruses must hijack the host cell machinery.
(True or False?) ANS True
Koch's postulates are four criteria intended to establish a causative relationship between a microbe
and a disease. Which of the following is not required for fulfilling the postulates?
A) Isolation of the microbe from the diseased individual or animal
B) Growing of the microbe in pure culture in the laboratory
C) Determination of the nucleic acid sequence of the microbe's genome
D) Inoculation of the pure culture of the microbe into susceptible laboratory animals
, E) None are the correct answer ANS B) Determination of the nucleic acid sequence of the
microbe's genome
All bacteria are pathogens and therefore cause disease. (True or False?) ANS False
The term zoonosis refers to animal diseases that are transmitted to humans. (True or False?) ANS
True
Vector-borne are diseases are that results from an infection transmitted to humans and other animals
by blood-feeding anthropods. (True or False?) ANS True
Immunoglobulins produced by B-cells that bind to antigens are also called antibodies. (True or
False?) ANS True
One of the three layers of the body's defense system is: ANS Physical/mechanical, Chemical, and
microbiological barriers
A primary immune response (antibody response) is stronger and more rapid than a secondary
immune response. (True or False?) ANS False
Variolation is the process by which individuals were protected against poxvirus by: ANS
Inoculation with scabs from smallpox virus patients
The term "herd immunity" refers to a means of protecting a whole community from disease by
immunizing a critical mass of its populace. The number of people who need to be vaccinated to reach
"herd immunity" is the same for all pathogens. (True or False?) ANS False
Vaccination aims to induce an innate immune response to a pathogen. (True or False?) ANS False
Which of the following is not a characteristic of staple foods?
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