Understanding Viruses and Immune System

Front

What is a virion?

Back

A virus particle outside a host cell.

Front

What is the main difference between active and passive immunity?

Back

Active immunity involves the body's own immune response.

Front

What is the main difference between enveloped and nonenveloped viruses?

Back

Enveloped viruses have a lipid bilayer.

Front

Which cells are responsible for releasing chemicals in response to physical injury?

Back

Mast cells.

Front

What triggers the inflammatory response?

Back

Physical trauma.

Front

What is a virus?

Back

A microscopic infectious agent that can only replicate inside a host cell.

Front

What is the role of antibodies in the immune system?

Back

Antibodies bind to specific antigens to neutralize pathogens.

Front

What are lymphocytes?

Back

A type of white blood cell that plays a key role in the immune response.

Front

What is the function of macrophages?

Back

Macrophages engulf and digest pathogens and dead cells.

Front

What is innate immunity?

Back

The body's first line of defense against pathogens, present from birth.