Viruses

Viruses are...

• prokaryotic
• eukaryotic
• non-living
• endospores

Needs host cell to reproduce.

• Virus
• Bacteria
• Fungus
• Protozoan

How does a virus cause a person to develop the common cold?

• invades the host cell to reproduce
• removes energy from the host cell
• produces toxins in the host cell
• protects the host cell from bacteria

When a virus invades a living cell, its _______
takes over the cell's functions.

• outer coat
• genetic material
• core
• cytoplasm

One reason that viruses are considered to be nonliving is that they are not made of ______.

• protein
• viruses
• bacteria
• cells

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

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

What part of the phage is the DNA?

• A
• B
• C
• D

True or False
The flu is caused by a virus.

• true
• false

What do viruses need to reproduce?

• they need genetic material
• They need a host cell
• They need  bacteria
• They need insulin

Antibiotics kill viruses

• True
• False