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Question
How are plasmids different than chromosomes?A) Plasmids are always small, linear pieces of DNA.
B) Plasmids are composed of single-stranded DNA.
C) Plasmids contain genes that are NOT essential for cellular growth and replication.
D) Plasmids carry unimportant genes that are of little significance for the ecology and metabolism of an organism.
Answer
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Which of the following statements about chlamydial infections is TRUE?
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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.
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Influenza pandemics occur cyclically because
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An individual usually expresses ________ structurally distinct allele(s) that encode class I MHC proteins.
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