Contagious vs. Infectious Diseases Quiz

Viruses

• Viruses are microscopic particles that can only replicate inside the cells of a living host.
• They are not considered living organisms because they lack the ability to reproduce independently.
• Viruses consist of a genetic material (DNA or RNA) encased in a protein coat.
• When a virus enters a host cell, it hijacks the cell's machinery to create more copies of itself.
• Once new viruses are assembled, they burst out of the host cell, spreading to infect other cells.

Diseases Caused by Viruses

• Influenza (Flu): A respiratory illness caused by influenza viruses. Symptoms include fever, cough, sore throat, muscle aches, and headaches.
• HIV (Human Immunodeficiency Virus): A virus that attacks the immune system, weakening the body's ability to fight off infections. HIV can lead to AIDS (Acquired Immunodeficiency Syndrome).

Test your knowledge on the differences between contagious and infectious diseases. Explore various types of diseases, including genetic, nutritional, autoimmune, and viral diseases, as well as the role of vaccines and the immune system. This quiz will help you understand how diseases affect health and immunity.