Bacteria + Viruses (23-24)

Which of the following is TRUE about Bacteria?

• Bacteria can easily be seen with the human eye

• Bacteria have multiple cells

• All bacteria are Non-living

• Bacteria are single-celled organisms

Hernando has a bacterial eye infection that won't go away. His doctor wants to prescribe him something to help. Should his doctor give him antibiotics or a vaccine?

• Antibiotics

• Vaccine

True or False: ALL bacteria is harmful.

• True

• False

Which are microscopic entities that takeover cells and inject their DNA into the cells?

• Bacteria

• Viruses

True or False: Antibiotics are commonly used to fight viruses.

• True

• False

True or False: Washing your hands with soap and water is one of the best ways to prevent spread of illnesses.

• True

• False

What is the outer protein coat of a virus is called?

(a)  

• Capsid
• DNA core
• Cell Membrane
• Capsule

What is the basic structure of a virus?

• DNA or RNA surrounded by a protein coat.

• A capsid protecting organelles.

• A tail sheath surrounded by tail.

• A tiny cell surrounded by a cell.

Which occurs during the lysogenic cycle of a virus infection?

• Viral genes instruct the host cell to make more viral protein capsids and enzymes needed for viral replication.

• The virus produces active, immediate infections.

• The virus takes over the cell, makes copies of itself, and usually kills the host cell.

• The viral genes become a part of the host cell DNA, so the cell continually makes more copies of the virus.

True or False: Bacteria cells reproduce through mitosis.

• True

• False