Viruses

What do viruses need to reproduce?

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

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

A virus can be classified by its type of

• mitochondria
• chromosomes
• nucleic acid
• carbohydrates

A(n) _____ is a virus that enters a bacterial cell.

• endospore
• decomposer
• plasmid
• bacteriophage

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

• outer coat

• genetic material

• core

• cytoplasm

What part of the phage is the DNA?

• A
• B
• C
• D

The flu is caused by a virus.

• true

• false

Antibiotics kill viruses

• True
• False

Which viral life cycle kills its host cell by lysing?

• lytic
• mitosis
• lysogenic
• S phase

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

• lytic
• mitosis
• lysogenic
• S phase