You are quite nervous about traveling with your friend, Isabella, who must have an Epi-pen for use in medical emergencies. You ask her for a mock demonstration on how to use it should you be required to do so. Isabella shows you how to:.
a. place it under her tongue.
b. dissolve it for administration.
c. inject it.
d. squirt it down her throat.

Which two levels of the spine that can undergo flexion and extension?

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Viruses use the host's machinery to make copies of themselves. however, some human viruses require a type of replication that humans do not normally have. for example, humans normally do not have the ability to convert rna into dna. how can these types of viruses infect humans, when human cells cannot perform a particular role that the virus requires? a) the virus causes mutations in the human cells, resulting in the formation of new enzymes that are capable of performing these roles.b) the viral genome codes for specialized enzymes not in the host.c) the virus infects only those cells and species that can perform all the replication roles necessary.d) viruses can stay in a quiescent state until the host cell evolves this ability.