Viruses

Front

What is a virus?

Back

A virus is a microscopic infectious agent that can only replicate inside the living cells of an organism.

Front

Can viruses reproduce on their own?

Back

No, viruses cannot reproduce on their own; they need a host cell to replicate.

Front

What happens when a virus invades a host cell?

Back

The virus takes over the host cell's machinery to reproduce and create more virus particles.

Front

Are viruses considered living or nonliving?

Back

Viruses are considered nonliving because they do not have cellular structure and cannot reproduce independently.

Front

What is the main way viruses cause illness?

Back

Viruses cause illness by invading host cells and disrupting normal cellular functions.

Front

What is an example of a disease caused by a virus?

Back

The common cold is an example of a disease caused by a virus.

Front

What is the role of the immune system in fighting viruses?

Back

The immune system identifies and attacks viruses to prevent infection and disease.

Front

What is a bacteriophage?

Back

A bacteriophage is a type of virus that specifically infects bacteria.

Front

How do vaccines work against viruses?

Back

Vaccines stimulate the immune system to recognize and fight specific viruses without causing the disease.

Front

What is the structure of a virus?

Back

A virus typically consists of genetic material (DNA or RNA) surrounded by a protein coat.