I WONDER - Are All Bacteria Harmful?

Pathogens, such as pneumonia and tonsillitis, can cause diseases in animals and plants. They enter the human body through the nose, mouth, or skin cuts, leading to infections. The immune system works to combat these threats and maintain health.

Which of the following is an example of a pathogen?

• Vitamin C

• Pneumonia

• Water

• Oxygen

What can pathogens cause in living organisms?

• Metabolism

• Photosynthesis

• Diseases

• Growth

How can harmful bacteria enter the human body?

• Through the nose

• Through the eyes

• Through the ears

• Through the hair

What role does the immune system play in the body?

• It regulates temperature

• It helps in digestion

• It produces energy

• It fights off infections

Which of the following is NOT a way bacteria can enter the body?

• Through the hair

• Through cuts in the skin

• Through the mouth

• Through the nose