Bacteria and Viruses

When a virus invades a living cell, its _______
takes over the cell's functions.

• outer coat
• genetic material
• core
• cytoplasm

What part of a virus is the protein capsule that houses the genetic material (DNA/RNA)?

• tail
• nucleus
• capsid
• glycoprotein

What do viruses need to reproduce?

• they need genetic material
• They need a host cell
• They need  bacteria
• They need insulin

What is the main function of the projections on the surface of a virus?

• They aid in respiration
• They help the virus grow
• They help the virus invade its host by attaching to specific sites on the host
• They help the virus digest food molecules

Reasons that viruses are considered to be nonliving is because

• They are not cellular
• They cannot reproduce on their own
• They cannot make proteins
• all of the above

What is one way that a lysogenic infection differs from a lytic infection?

• A lysogenic virus does not act on bacteria as a lytic virus does.
• A lysogenic virus can remain in the host DNA for a longer period without becoming active.
• A lysogenic virus contains RNA instead of DNA.
• A lysogenic virus directs the production of new viruses right away.

Which viral life cycle causes the host cell to burst open?

• lytic

• lysogenic

Thick peptidoglycan in cell wall

• Gram positive bacteria

• Gram negative bacteria

This is an example of the staining of what type of bacteria?

• That's not bacteria

• Gram positive

• Both types of bacteria

• Gram negative

How are bacterial cells different from the cells of eukaryotes?

• The bacteria are prokaryotes, and the genetic material is not contained in the nuclei.

• The bacteria are eukaryotes, and the genetic material is not contained in the nuclei.

• The bacteria are prokaryotes, and the genetic material is contained in the nuclei.

• The bacteria are eukaryotes, and the genetic material is contained in the nuclei.