Cells and Microorganisms

Microorganisms are tiny living organisms that can only be seen with a microscope. They include bacteria, viruses, fungi, and protozoa.

False. Most microorganisms found in a stream of water are harmless to humans.

Animal cells.

False. Not all bacteria are harmful; some are beneficial and necessary for processes like digestion.

Antibiotics are used to treat bacterial infections.

In the center of the cell. It controls the cell's growth.

The cell membrane surrounds the cell and controls what enters and exits the cell.

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

Bacteria play essential roles in the environment, including decomposing organic matter and recycling nutrients.

Bacteria are single-celled organisms that can live independently, while viruses need a host cell to reproduce.