Viral evolution morphology and classification

Rabies virus

A scientist discovers a new virus with a linear, RNA genome surrounded by a helical capsid. The virus is most likely a member of which family based on structure classification? Influenza viruses . Herpesviruses . Retroviruses . Rabies virus .

Vary in shape

Viruses_______. all have a round shape . cannot have a long shape . do not maintain any shape . vary in shape .

Regressive

The observation that the bacteria genus Chlamydia contains species that can only survive as intracellular parasites supports which viral origin hypothesis? Virus-first . Progressive . Regressive . Self-replicating

Envelope, capsid

The viral ________ play(s) a role in attaching a virion to the host cell. core . envelope . capsid

Viruses are acellular

Which statement is true? Viruses replicate outside of the cell. . A virion contains DNA and RNA. . Most viruses are easily visualized with a light microscope. . Viruses are acellular. .