Chapter 19 Flashcards Preview

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Flashcards in Chapter 19 Deck (13):
0

Are viruses cells?

No.

1

What is a virus?

Is a very small infectious particle consisting of nucleic acids enclosed in a protein coat.

2

What is a capsid?

Is the protein shell that encloses the viral genome.

3

What are bacteriophages also called?

Phases.

4

What do phages do?

Infect bacteria.

5

What's a retro virus?

It uses reverse transcriptase to copy their RNA genome into DNA. (HIV AND AIDS)

6

What is the provirus?

The viral DNA that is integrated into the host genome.

7

What is horizontal transmission?

Entering through damaged cell walls.

8

What is vertical transmission?

Inheriting the virus from a parent.

9

What are the two modes in which plants spread diseases?

Vertical & horizontal transmission

10

What are viroids?

Small circular RNA molecules that infect plants and disrupt their growth.

11

What are prions?

Slow-acting indestructible infectious proteins that cause brain diseases in mammals

12

What viruses/diseases are caused by prions?

Scrapie in sheep, mad cow disease, and creutzfeldt-Jacob disease