Summer School Biology - CH 14 - Section I - III Quiz

A virus is a particle that consists of a core of nucleic acid and a _________

• Protein Coat

• Poison

• Bacterium

• Crystal

Envelopes surround and protect ________________.

• All viruses

• Viruses that infect plant cells

• Viruses that infect animal cells

• Nucleic acids within the capsid

The spikes covering the envelopes of some viruses allow them to

• burst capsids

• filter bacteria

• attach to cells they infect

• stop protein streams

All of the following terms describe viral shapes except

• binal

• polyhedral

• helical

• prophage

One hypothesis about the origin of viruses is that they evolved from

• fungi

• cells of host organisms

• minerals

• parasites

Viruses that infect and kill bacteria are known as

• bacteriophages

• nanometers

• chromosomal invaders

• site-specific bacteria

Which characteristic of living things do viruses lack?

• Independent Growth

• RNA

• DNA

• Protein

Two cycles in which a virus can infect a host cell are the lysogenic cycle and the

• prophage cycle

• bacteriophage cycle

• lytic cycle

• prion cycle

Retroviruses contain all of the following structures except

• DNA

• envelope proteins

• reverse transcriptase

• RNA

When a host cell is rapidly killed by a virus, what type of viral replication cycle has occurred?

• Lytic Cycle

• Lysogneic Cycle

• Retrocycle

• Nucleic Acid cycle