The etiologic agent is the Blank______.Multiple choice question.vector that spreads the diseasemedium that allows for transfer of the pathogeninanimate object that harbors the pathogenpathogen that causes the disease

The causative agent of influenza is a Blank______.Multiple choice question.fungusbacteriumprotistvirus

Infectious agents do NOT travel to their target tissue through Blank______.Multiple choice question.the bloodstreamnervesmusclescerebrospinal fluid

A pathogen is a microbe that Blank______.Multiple choice question.normally lives on the bodyis a disease causing agentdoes no harm, and in fact can be beneficialcauses disease only in unusual situations, such as when a host is immunosuppressed

Scientists identify a new type of infectious agent that causes disease in humans.  They hypothesize that this agent is a viroid.  Which of the following observations best supports this hypothesis?A.The agent is surrounded by a protein coat that promotes entry into human cells.B.The agent lacks genetic material but can still replicate inside human cells.C.The agent is found to be composed entirely of a single circular RNA molecule.D.When exposed to the agent, endogenous human proteins become misfolded.

Vectors can be defined asAnimals carry the infecting agents from sick person to another healthy personMicroorganisms which cause many diseasesInfected personDiseased plants