20.3 Viruses and Prions

Multiple Choice

What kind of genetic material can viruses have?

• Viruses can have DNA or RNA as their genetic material.
• Viruses can have lipids or carbohydrates as their genetic material.
• Viruses can only have proteins as their genetic material.
• Viruses exclusively contain plasmids as their genetic material.

Multiple Choice

The Lytic viral cycle is when...

• The lytic viral cycle is when a virus replicates within a host cell and causes the cell to burst, releasing new viruses.
• The lytic viral cycle is when a virus only infects bacteria without causing cell damage.
• The lytic viral cycle is when a virus remains dormant within the host cell without replication.
• The lytic viral cycle is when a virus integrates its DNA into the host genome.

Multiple Choice

Which viral cycle produces active infections like the cold and flu?

• Lysogenic cycle
• Lytic cycle
• Retroviral cycle
• Bacteriophage cycle

Multiple Choice

The Lysogenic viral cycle is when...

• The virus integrates its DNA into the host chromosomes and remains dormant.

• The virus replicates without integrating into the host genome.
• The virus immediately destroys the host cell.
• The virus causes the host cell to produce toxins.

Multiple Choice

Which viral cycle can lie dormant?

• Lytic cycle
• Chronic cycle
• Transformative cycle
• Lysogenic cycle

Multiple Choice

What aspect of proteins does a prion affect to mutate it?

• The amino acid sequence of proteins.
• The energy levels of proteins.
• The shape of the protein.

• The size of protein molecules.