Viruses and Bacteria

Which statement is true about viruses?

• Viruses can eat and metabolize food.

• Viruses can reproduce only using a host cell.

• Viruses can reproduce on their own at any time.

• Viruses contain DNA, so they are alive.

Which of these is characteristic of both viruses and bacteria?

• They get their energy from their environment.

• They can reproduce on their own.

• They can form crystals and become dormant.

• They contain proteins and nucleic acids.

What do viruses need to reproduce?

• Genetic material

• A host cell

• Bacteria

• Insulin

Which viral life cycle kills its host cell by lysing (bursting)?

• Lysogenic Cycle

• Lytic Cycle

• Binary Fission

• Conjugation

What helps prevent viral diseases?

• Vaccines
• Antibiotics
• Herbal tea
• Gene Therapy

Can a virus be cured with antibiotics?

• yes

• no

Which is most often used to destroy bacteria?

• vaccine

• antibiotics

• vitamins

• water

What does invading the host cell enable the virus to do?

• increase its size
• synthesize needed oxygen
• obtain nutrients
• reproduce

To what would the phrase "is not a cell but has the ability to reproduce within a living cell" best describe?

• an alga
• a yeast
• a bacterium
• a virus

A small circular strand of DNA found in bacteria is called a

• Conjugate

• Peptidoglycan

• Plasmid

• Ribosome