Introduction to Viruses

A virus is a tiny infectious

• cell
• living thing
• particle
• nucleic acid

Viruses are known to infect

• plants 
• bacteria
• fungi
• all organisms

The nucleic acid of a virus is

• DNA only
• RNA only
• both DNA and RNA
• either DNA or RNA

What part of a virus is the protein capsule that houses the genetic material (DNA/RNA)?

• tail
• nucleus
• capsid
• glycoprotein

Which viral life cycle allows viral genetic material to lay dormant while the host cell reproduces?

• lytic
• mitosis
• lysogenic
• S phase

Is a virus considered living or non-living?

• Living
• Non-Living
• Neither

What is the first step of the virus reproduction cycle?

• The viruses genetic material (DNA) starts to take over the functions of the cell
• The host cell bursts open, releasing the new viruses
• The virus injects its genetic material into the cell
• A virus attaches to the surface of a host cell

What do viruses have in common with living cells? They both...

• store genetic information
• have chloroplasts
• use glucose for cellular respiration
• have endoplasmic reticulum

Tags

NGSS.MS-LS3-1

True or False
The flu is caused by a virus.

• true
• false

Antibiotics kill viruses

• True
• False