Answer:
These one-cell organisms are responsible for illnesses such as strep throat, urinary tract infections and tuberculosis. Viruses. Even smaller than bacteria, viruses cause a multitude of diseases ranging from the common cold to AIDS. Fungi.
Micro-organisms that cause infection are known as pathogens. Bacteria, viruses, pathogenic fungi and parasites are all examples of micro-organisms that can cause infection. The different kinds of micro-organisms have different characteristics.
Explanation:
