Viruses

What are pathogens?

• any disease-causing agent

• any disease-carrying agent

• vaccines

• any vaccine-carrying agent

Viruses are only made up of DNA?

True or False

• True

• False

Viruses cannot ____ on their own.

• energize

• feed

• survive

• reproduce

_____ must have a host cell to reproduce and make proteins.

• a protein

• a pathogen

• a dead cell

• a virus

What is a capsid?

• a protein shell

• a cell membrane

• a cell wall

• a cap that goes on the outer part of a virus

Lipid envelope:

• a pathogen

• a protein shell

• a protective outer coat

Bacteriophages infect ______

• bacteria

• viruses

• cells

• the immune system

Bacteriophages _____ host cells.

• eat

• pierce

• obtain energy

• take DNA or RNA

Viruses of eukaryotes can _____ with the cell membrane or enter by ________.

• match; the skin

• move; the mouth

• fuse; endocytosis

A ________ infection causes the host cell to burst.

• lysogenic

• lytic