Which of the following characteristics, structures, or processes is common to both bacteria and

viruses?

• cell division

• genetic material composed of nucleic acid

• ribosomes

• metabolism

Which of the following statements correctly describes one characteristic of the lytic cycle of viral replication?

• Viral DNA is incorporated into the host genome.

• Many bacterial cells containing viral DNA are produced.

• The viral genome replicates without destroying the host.

• A large number of phages are released at a time.

Which viruses have single-stranded RNA that acts as a template for DNA synthesis?

• lytic phages

• retroviruses

• proviruses

• bacteriophages

• viroids

Which of the following processes can be effective in preventing the onset of viral infection in humans?

• applying antiseptics

• taking antibiotics

• getting vaccinated

• taking vitamins

A(n) _____ is a virus that enters a bacterial cell.

• endospore
• decomposer
• plasmid
• bacteriophage

What part of the phage is the DNA?

• A
• B
• C
• D

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

• tail
• nucleus
• capsid
• glycoprotein

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 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
• They help the virus digest food molecules

A virus consists of:

• RNA or DNA and a cell membrane

• RNA or DNA and a protein coat

• RNA and DNA and a protein coat

• proteins, cell membrane, and RNA