How do emerging viruses arise? by the spread of existing viruses to new host species by mutation of existing viruses by the spread of existing viruses more widely within their host species all of the above

Emerging viruses that suddenly become apparent in causing widespread disease are actually caused by the spread of existing viruses to new host species. mutation of existing viruses. all of the other answers together are correct the spread of existing viruses more widely within their host species.

How does Red Queen Hypothesis cause an evolutionary race with coronaviruses and mammalian species

What does it mean when you call a virus "selective"? BIUH1 H2

Which of the following viruses is not an oncogenic DNA virus? -Retroviridae -Poxviridae -Herpesviridae -Papovaviridae -Adenoviridae

Viruses are able to only infect the cells of very specific species Which of the following host cell structures allows a virus into a cell, thus causing disease? O Host cell DNA O Host cell nucleus Host cell receptor sites O Host cell membrane

Which of the following are NOT enabling factors for the emergence of a new viral disease? a lack of changes in weather patterns human behavior breakdown of public health measures co-infection on one host with two viruses habitat disruption

Regular herpesvirus-mediated cold sores or genital sore flare-ups are caused by reinfection by the same herpesvirus strain reinfection by a closely related herpesvirus of a different strain copies of the herpesvirus genome permanently maintained in host cell cytoplasm copies of the herpesvirus genome permanently maintained in host nuclei

Viruses are not typically considered living organisms because they contain no biological molecules like lipids and proteins they can not replicate or reproduce on their own they do have any genetic material (DNA or RNA)

which of the following is NOT a mechanism by which viruses can damage the human body (ie- harm us)? causes our viral infections may lead to the release of too much cytokines/chemical signals O may cause our defenses/immune system to over-react Othey produce and release toxins O may cause cancer Otheir replication (life cycle) destroys our cells