Organisms and Viruses (SB4c)

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

How do viruses reproduce?

Back

Viruses must infect a host cell to reproduce, using the host's cellular machinery to create new virus particles.

Front

What is the difference between living and non-living organisms?

Back

Living organisms can grow, reproduce, and carry out metabolic processes, while non-living organisms do not exhibit these characteristics.

Front

What is a bacterium?

Back

A bacterium is a single-celled living organism that has a simple structure and can reproduce independently.

Front

Why are antibiotics ineffective against viruses?

Back

Antibiotics target specific functions in bacteria, but viruses do not carry out these functions as they are not considered alive.

Front

What is a host in the context of viruses?

Back

A host is a living cell that a virus infects in order to reproduce.

Front

Can bacteria be beneficial?

Back

Yes, many bacteria are beneficial and play essential roles in processes like digestion and nutrient cycling.

Front

What is the protein coat of a virus called?

Back

The protein coat of a virus is called a capsid.

Front

What is the main structural difference between bacteria and viruses?

Back

Bacteria are living cells with a cellular structure, while viruses are non-living and consist of genetic material surrounded by a protein coat.

Front

What is the role of organelles in living cells?

Back

Organelles are specialized structures within a cell that perform specific functions necessary for the cell's life.