The spread of disease

The video tutorial explains how harmful microorganisms like bacteria and viruses can cause infections such as salmonella and gastroenteritis. It describes how these microorganisms spread and reproduce, highlighting the differences between bacteria and viruses. The video also discusses the body's immune system, particularly white blood cells, in fighting infections. Additionally, it emphasizes the importance of hygiene practices, such as handwashing, and the role of antibiotics in preventing the spread of infections.

What can happen if harmful microorganisms enter the body through the eyes, nose, or mouth?

• They will be immediately destroyed.

• They can lead to an infection.

• They will improve the immune system.

• They can cause a mild rash.

How do bacteria reproduce?

• By forming spores

• By division

• By budding

• By invading body cells

What is the primary way viruses reproduce?

• By forming colonies

• By dividing themselves

• By invading body cells

• By splitting into spores

What is the role of white blood cells in the immune system?

• To produce antibodies

• To seek out and destroy harmful microorganisms

• To transport oxygen

• To digest food particles

Which practice is essential to prevent the spread of harmful microorganisms?

• Eating more fruits

• Sleeping eight hours a day

• Washing hands frequently with soap and water

• Exercising regularly