Virus and Immune System

What do viruses need to reproduce?

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

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

Tags

NGSS.MS-LS1-2

True or False
The flu is caused by a virus.

• true
• false

Which viral life cycle kills its host cell by lysing?

• lytic
• mitosis
• lysogenic
• S phase

Antibiotics kill viruses

• True
• False

Which of the following occurs after a virus attaches to a host cell in the viral reproduction process?

• The host cell dies
• The virus dies
• The virus inserts its genetic information into the host cell
• copies of the virus are immediately released from the host

Bacteria that are harmful to people are called _____.

• Pathogen
• Lymph Nodes
• Macrophages
• T Cells 

Which of the following is the body’s first line of defense against disease?

• vaccines
• white blood cells
• antibodies
• skin