ap bio prok and virus test

Escherichia coli is classified as

• an archaea.

• a bacterium.

• a eukaryote.

• a virus.

Which of the bacteria shown is in the shape of a coccus?

• the spherical bacteria

• the rod-shaped bacteria

• the spiral-shaped bacteria

• the viral shaped bacteria

During what process do prokaryotes exchange genetic information?

• cell division

• binary fission

• conjugation

• endospore formation

A lytic infection concludes with the

• insertion of viral DNA into the host cell’s DNA.

• production of a prophage.

• bursting of the host cell.

• production of messenger RNA.

Bacteriophages infect

• other viruses.

• bacteria

• any available host cell.

• cells undergoing the lytic cycle.

Unlike lytic viruses, lysogenic viruses do NOT

• inject their genetic material into the host cell.

• enter the lytic cycle.

• lyse (burst) the host cell right away.

• infect host cells.

Bacteria that cause disease are called

• viruses

• pathogens

• prophages.

• antibiotics.

The viral infection cycle that will most rapidly cause cell destruction is called the _______ cycle.

• lysogenic

• lysozyme

• lytic

• lysol

Which statement is true about prokaryotes?

• They contain a single circular DNA molecule as the genetic material.

• They lack ribosomes.

• They usually lack a cell wall.

• They divide by mitosis.

The microscopic object shown has genetic material, but no cellular structure. It cannot reproduce on its own, and is measured in nanometers. It must be a:

• Quetzalcoatlus

• Virus

• Prokaryotes

• Eukaryotes