Virus Basics

Viruses are considered

• living things

• non-living things

• partially living things

Viruses are shaped like

• spheres

• cubes

• a diamond shape with tail fibres

• all of these

A virus's genetic material is surrounded by

• a protein capsid

• DNA

• a tail fiber

• nothing

Which cycle of a virus is most destructive to the host?

• lytic cycle

• lysogenic cycle

This image represents part of the

• lytic cycle

• lysogenic cycle

Choose the correct order of lytic cycle steps

• attachment, injection, assembly, synthesis, lysis

• attachment, injection, synthesis, assembly, lysis

• attachment, injection, assembly, lysis, synthesis

• attachment, lysis, assembly, synthesis, injection

Viruses attach only to a particular host because of the presence of

• DNA

• magnetic attraction

• surface receptors

• other viruses

A virus in the lysogenic state can be forced into the lytic cycle by

• exposure to UV light

• exposure to certain chemicals

• a change in temperature or pH

• all of these

Which of these is caused by a virus?

• the common cold

• chicken pox

• strep throat

• two of these

• all 3 of these

viruses are non-living because

• they cannot reproduce on their own

• they do not evolve

• they have no DNA

• they cannot be destroyed