immune system

Why are viruses classified as non-living things? (choose 3)

• viruses can't grow and develop on their own

• viruses can't obtain or use energy

• viruses must infect a host cell in order to replicate

• viruses are able to change over time / evolve

What attaches to antigens and tags the pathogen for destruction?

• pathogen

• B cells

• antibodies

• lymphocytes

How can we prevent viruses from mutating into new variants or strains?

• take antibiotics when sick with a viral infection

• prevent the virus from replicating and mutating

• allow viruses to form envelopes

• allow viruses to infect more people/animals

Vaccines stimulate the body to produce...

• autoimmune diseases
• helper t-cells
• fever
• antibodies

Something that causes disease is called a

• Tissue

• Pathogen

• Vaccine

• Illness

Diseases can be transmitted by all of the following except

• Contaminated food

• A sick person

• Contaminated objects

• Clean water

T or F - The type of pathogen that invades your cells and uses your cellular processes to make more copies of itself is a virus.

• true

• false

A substance made from weakened pathogens that triggers an immune response is a

• Virus

• Vaccine

• Antibiotic

• Fever

T or F - A fever can help you fight infection.

• true

• false

All diseases can be passed to other people.

• True

• False