Science Notebook - Student Edition

Main Idea Details

184 Bacteria and Viruses

Section 18.2 Viruses and Prions (continued)

Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.

Model of one type of virus. Label its parts.

Synthesize why many viruses cannot pass from one species to

another.

Label steps A, B, C, D, and E of a lytic cycle in the figure below.

Use the following terms.

• Assembly • Attachment • Entry


• Lysis and Release • Replication

Viruses

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on page.

Viral Infection

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on page.

E

C

A

Bacteriophage

The bacteriophage

injects its nucleic acid

into the bacterial cell.

New virus

particles are

assembled.

The host’s

metabolic

machinery makes

viral nucleic acid

and proteins.

The host cell breaks open and

releases new virus particles.

Nucleic

acid

Bacterial DNA

Bacterial

host cell

B

D