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Question
Elaborate on why discovering endospores was important to microbiology.Answer
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C) lesion.
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The most common infectious disease(s) is/are
A) gonorrhea.
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Which disease causes over 1.6 million deaths per year worldwide, which is approximately 11% of all deaths related to infectious diseases?
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Which of the following statements about chlamydial infections is TRUE?
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The Spanish flu of 1918 was caused by an ________ influenza virus.
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Diseases can be controlled through immunization even if the percentage of the population that is immunized is less than 100% because
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B) most diseases lack reservoirs.
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In 2003, the majority of AIDS deaths occurred in
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The study of the occurrence, distribution, and determinants of health and disease in a population is the field of
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Filoviruses (such as Ebola virus) that cause severe hemorrhagic fevers generally have high ________ but low ________.
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B) prevalence / mortality
C) mortality / morbidity
D) morbidity / mortality
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Cholera is an example of a pandemic disease that
A) has multiple wild animal reservoirs and is thus difficult to eradicate.
B) spreads from a common source and could be controlled with adequate clean water and waste sanitation measures.
C) is spread through direct contact and has only a human reservoir.
D) has recently emerged due to overcrowding in urban centers.
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Influenza pandemics occur cyclically because
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C) the vector is seasonal.
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B) can be virtually any pathogenic bacterium or virus.
C) are eukaryotic rather than prokaryotic.
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The arrangement of Class II MHC proteins in pairs or trimers enhances their stability.
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________ ensures that each B cell produces only one immunoglobulin.
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The major histocompatibility complex is also called the
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Interaction of a PAMP with a TLR triggers transmembrane signal transduction and subsequent
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Which of the following is involved in B cell selection and tolerance?
A) clonal anergy
B) clonal deletion
C) clonal anergy and deletion
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Clonal anergy is a state of
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B) high energy.
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D) high energy and antibody production.
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An individual usually expresses ________ structurally distinct allele(s) that encode class I MHC proteins.
A) one
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C) four
D) six