Unit 9 Biotech, Bacteria, & Viruses Test Review

Bacteriophages can infect bacteria such as E. coli. In what way are bacteriophages and E. coli alike?

• They contain antibodies

• They reproduce through mitosis

• They have identical genomes

• They lack membrane-bound organelles

Which option correctly describes the lytic and lysogenic cycles?

• A. Lytic: A bacteriophage injects its viral genome into a host cell.

  Lysogenic: The host cell immediately bursts and releases viral particles.

• B. Lytic: A bacteriophage bursts and releases viral particles.

  Lysogenic: A host cell inserts its genome into a bacteriophage genome.

• C. Lytic: A bacteriophage inserts its viral genome into a host cell's genome.

  Lysogenic: A host cell reproduces inside a bacteriophage and releases viral particles.

• D. Lytic: A bacteriophage reproduces inside a host and releases bacteriophages when the host cell bursts.

  Lysogenic: A bacteriophage inserts its viral genome into a host cell's genome.

Any organism or particle that can cause an infectious disease is called a ___.

Viruses can only reproduce under which of the following conditions.

• when they are outside a living organism

• when they carry out respiration

• when they grow or move

• when they are inside a host cell

Viruses that infect bacteria are called ___.

• bacteriophages

• retroviruses

• proviruses

• prophages

In the virus to the right, what structure is labeled C?

• glycoprotein

• viral envelope

• capsid

• DNA

HIV is a retrovirus which contains a unique enzyme known as ______.

• reverse transcriptase
• RNA polymerase

• DNA polymerase

• Helicase

A substance that stimulates the body's immune response against future invasion by microbes is a ___.

What is the difference in the function of the glycoprotein structures of an HIV virus and the cilia of an animal cell?

• The glycoprotein structures are used to obtain nutrition, and the cilia are used to secrete proteins

• The glycoprotein structures allow the virus to move, and the cilia are used to secrete proteins

• The glycoprotein structures are used for attachment, and the cilia are used to move

• The glycoprotein structures are used for conjugation, and the cilia are used to obtain nutrition

According to the picture, what is the process that brings about an exchange of genetic information between bacterial cells?

• binary fission

• mutualism

• conjugation

• replication